155571407157 has 32 divisors (see below), whose sum is σ = 215045093376. Its totient is φ = 99978278400.

The previous prime is 155571407119. The next prime is 155571407161. The reversal of 155571407157 is 751704175551.

It is not a de Polignac number, because 155571407157 - 2⁸ = 155571406901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155571407357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9234732 + ... + 9251562.

It is an arithmetic number, because the mean of its divisors is an integer number (6720159168).

Almost surely, 2^155571407157 is an apocalyptic number.

It is an amenable number.

155571407157 is a deficient number, since it is larger than the sum of its proper divisors (59473686219).

155571407157 is a wasteful number, since it uses less digits than its factorization.

155571407157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17901.

The product of its (nonzero) digits is 857500, while the sum is 48.

The spelling of 155571407157 in words is "one hundred fifty-five billion, five hundred seventy-one million, four hundred seven thousand, one hundred fifty-seven".