155955525759623 has 2 divisors, whose sum is σ = 155955525759624. Its totient is φ = 155955525759622.

The previous prime is 155955525759617. The next prime is 155955525759647. The reversal of 155955525759623 is 326957525559551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155955525759623 - 2³² = 155951230792327 is a prime.

It is a super-2 number, since 2×155955525759623² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155955525059623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77977762879811 + 77977762879812.

It is an arithmetic number, because the mean of its divisors is an integer number (77977762879812).

Almost surely, 2^{155955525759623} is an apocalyptic number.

155955525759623 is a deficient number, since it is larger than the sum of its proper divisors (1).

155955525759623 is an equidigital number, since it uses as much as digits as its factorization.

155955525759623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3189375000, while the sum is 74.

The spelling of 155955525759623 in words is "one hundred fifty-five trillion, nine hundred fifty-five billion, five hundred twenty-five million, seven hundred fifty-nine thousand, six hundred twenty-three".