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57015120071 = 721397922739
BaseRepresentation
bin110101000110010111…
…011011000011000111
312110011111000012020202
4311012113123003013
51413231332320241
642105315521115
74055613344600
oct650627330307
9173144005222
1057015120071
11221a8604648
12b0722b919b
1354b823ab50
142a8c2a4da7
15173a698d9b
hexd465db0c7

57015120071 has 24 divisors (see below), whose sum is σ = 72161958960. Its totient is φ = 44645755392.

The previous prime is 57015120017. The next prime is 57015120073. The reversal of 57015120071 is 17002151075.

It is not a de Polignac number, because 57015120071 - 210 = 57015119047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57015120073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399581 + ... + 523158.

It is an arithmetic number, because the mean of its divisors is an integer number (3006748290).

Almost surely, 257015120071 is an apocalyptic number.

57015120071 is a deficient number, since it is larger than the sum of its proper divisors (15146838889).

57015120071 is a wasteful number, since it uses less digits than its factorization.

57015120071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922863 (or 922856 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 29.

The spelling of 57015120071 in words is "fifty-seven billion, fifteen million, one hundred twenty thousand, seventy-one".

Divisors: 1 7 13 49 91 97 637 679 1261 4753 8827 61789 922739 6459173 11995607 45214211 83969249 89505683 587784743 626539781 1163573879 4385778467 8145017153 57015120071