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57216157012 = 2279192223541
BaseRepresentation
bin110101010010010110…
…010100010101010100
312110200111021221002101
4311102112110111110
51414134314011022
642141300451444
74063604211250
oct652226242524
9173614257071
1057216157012
11222a1035683
12b1096a9b84
13551aa99111
142aaac77260
15174d15a627
hexd52594554

57216157012 has 24 divisors (see below), whose sum is σ = 114556883840. Its totient is φ = 24494516640.

The previous prime is 57216157001. The next prime is 57216157013. The reversal of 57216157012 is 21075161275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57216157013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086039 + ... + 1137502.

Almost surely, 257216157012 is an apocalyptic number.

It is an amenable number.

57216157012 is an abundant number, since it is smaller than the sum of its proper divisors (57340726828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57216157012 is a wasteful number, since it uses less digits than its factorization.

57216157012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224471 (or 2224469 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 57216157012 in words is "fifty-seven billion, two hundred sixteen million, one hundred fifty-seven thousand, twelve".

Divisors: 1 2 4 7 14 28 919 1838 3676 6433 12866 25732 2223541 4447082 8894164 15564787 31129574 62259148 2043434179 4086868358 8173736716 14304039253 28608078506 57216157012