155423915842 has 32 divisors (see below), whose sum is σ = 255865381632. Its totient is φ = 70364458944.

The previous prime is 155423915839. The next prime is 155423915863. The reversal of 155423915842 is 248519324551.

It is a super-2 number, since 2×155423915842² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7606003 + ... + 7626409.

It is an arithmetic number, because the mean of its divisors is an integer number (7995793176).

Almost surely, 2^155423915842 is an apocalyptic number.

155423915842 is a deficient number, since it is larger than the sum of its proper divisors (100441465790).

155423915842 is a wasteful number, since it uses less digits than its factorization.

155423915842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26002.

The product of its digits is 1728000, while the sum is 49.

The spelling of 155423915842 in words is "one hundred fifty-five billion, four hundred twenty-three million, nine hundred fifteen thousand, eight hundred forty-two".