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61468648285 = 51119976011009
BaseRepresentation
bin111001001111110100…
…010010001101011101
312212122212002212110011
4321033310102031131
52001341433221120
644123250243221
74304151614062
oct711764221535
9185585085404
1061468648285
11240834a4280
12bab5886511
135a47ac3145
142d91954c69
1518eb657c5a
hexe4fd1235d

61468648285 has 64 divisors (see below), whose sum is σ = 85803782400. Its totient is φ = 41803776000.

The previous prime is 61468648271. The next prime is 61468648333. The reversal of 61468648285 is 58284686416.

It is a happy number.

It is not a de Polignac number, because 61468648285 - 211 = 61468646237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60919861 + ... + 60920869.

It is an arithmetic number, because the mean of its divisors is an integer number (1340684100).

Almost surely, 261468648285 is an apocalyptic number.

It is an amenable number.

61468648285 is a deficient number, since it is larger than the sum of its proper divisors (24335134115).

61468648285 is a wasteful number, since it uses less digits than its factorization.

61468648285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742.

The product of its digits is 17694720, while the sum is 58.

The spelling of 61468648285 in words is "sixty-one billion, four hundred sixty-eight million, six hundred forty-eight thousand, two hundred eighty-five".

Divisors: 1 5 11 19 55 95 97 209 485 601 1009 1045 1067 1843 3005 5045 5335 6611 9215 11099 11419 19171 20273 33055 55495 57095 58297 95855 97873 101365 125609 210881 291485 489365 606409 628045 641267 1054405 1076603 1107643 1859587 3032045 3206335 5383015 5538215 6670499 9297935 11521771 12184073 20455457 33352495 57608855 58821673 60920365 102277285 126739481 294108365 633697405 647038403 1117611787 3235192015 5588058935 12293729657 61468648285