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157158730013 = 1159311355623
BaseRepresentation
bin1001001001011101100…
…0111110100100011101
3120000122122212200022012
42102113120332210131
510033330113330023
6200110413001005
714232353110145
oct2222730764435
9500578780265
10157158730013
1160718007a4a
1226560183165
1311a8771ca8c
14786c429925
15414c2ee978
hex249763e91d

157158730013 has 4 divisors (see below), whose sum is σ = 157160201568. Its totient is φ = 157157258460.

The previous prime is 157158729997. The next prime is 157158730061. The reversal of 157158730013 is 310037851751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310037851751 = 793924529769.

It is a cyclic number.

It is not a de Polignac number, because 157158730013 - 24 = 157158729997 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 (157158730063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561881 + ... + 793742.

It is an arithmetic number, because the mean of its divisors is an integer number (39290050392).

Almost surely, 2157158730013 is an apocalyptic number.

It is an amenable number.

157158730013 is a deficient number, since it is larger than the sum of its proper divisors (1471555).

157158730013 is a wasteful number, since it uses less digits than its factorization.

157158730013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471554.

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 157158730013 in words is "one hundred fifty-seven billion, one hundred fifty-eight million, seven hundred thirty thousand, thirteen".

Divisors: 1 115931 1355623 157158730013