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61055250151 = 717760767447
BaseRepresentation
bin111000110111001011…
…010010111011100111
312211121001020001211011
4320313023102323213
52000020121001101
644014241523051
74261002030520
oct706713227347
9184531201734
1061055250151
1123991108125
12b9bb343487
1359b027036c
142d52aa3847
1518c51e9751
hexe372d2ee7

61055250151 has 16 divisors (see below), whose sum is σ = 73892791296. Its totient is φ = 49247450496.

The previous prime is 61055250149. The next prime is 61055250173. The reversal of 61055250151 is 15105255016.

It is a cyclic number.

It is not a de Polignac number, because 61055250151 - 21 = 61055250149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055250101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871510 + ... + 938956.

It is an arithmetic number, because the mean of its divisors is an integer number (4618299456).

Almost surely, 261055250151 is an apocalyptic number.

61055250151 is a deficient number, since it is larger than the sum of its proper divisors (12837541145).

61055250151 is a wasteful number, since it uses less digits than its factorization.

61055250151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75078.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 61055250151 in words is "sixty-one billion, fifty-five million, two hundred fifty thousand, one hundred fifty-one".

Divisors: 1 7 17 119 7607 53249 67447 129319 472129 905233 1146599 8026193 513069329 3591485303 8722178593 61055250151