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53148788515 = 5416113930577
BaseRepresentation
bin110001011111111010…
…100010011100100011
312002012000211012102201
4301133322202130203
51332322042213030
640225522554031
73561035151124
oct613772423443
9162160735381
1053148788515
11205a4118509
12a373508917
13502021a8b4
1428029c804b
1515b10292ca
hexc5fea2723

53148788515 has 32 divisors (see below), whose sum is σ = 66885094080. Its totient is φ = 40507084800.

The previous prime is 53148788507. The next prime is 53148788531. The reversal of 53148788515 is 51588784135.

It is not a de Polignac number, because 53148788515 - 23 = 53148788507 is a prime.

It is a super-2 number, since 2×531487885152 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1722907 + ... + 1753483.

It is an arithmetic number, because the mean of its divisors is an integer number (2090159190).

Almost surely, 253148788515 is an apocalyptic number.

53148788515 is a deficient number, since it is larger than the sum of its proper divisors (13736305565).

53148788515 is a wasteful number, since it uses less digits than its factorization.

53148788515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30823.

The product of its digits is 5376000, while the sum is 55.

The spelling of 53148788515 in words is "fifty-three billion, one hundred forty-eight million, seven hundred eighty-eight thousand, five hundred fifteen".

Divisors: 1 5 41 61 139 205 305 695 2501 5699 8479 12505 28495 30577 42395 152885 347639 1253657 1738195 1865197 4250203 6268285 9325985 21251015 76473077 174258323 259262383 382365385 871291615 1296311915 10629757703 53148788515