155021958456 has 32 divisors (see below), whose sum is σ = 392863871760. Its totient is φ = 50966122752.

The previous prime is 155021958449. The next prime is 155021958463. The reversal of 155021958456 is 654859120551.

It is an interprime number because it is at equal distance from previous prime (155021958449) and next prime (155021958463).

It is a junction number, because it is equal to n+sod(n) for n = 155021958399 and 155021958408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44239675 + ... + 44243178.

Almost surely, 2^155021958456 is an apocalyptic number.

It is an amenable number.

155021958456 is an abundant number, since it is smaller than the sum of its proper divisors (237841913304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155021958456 is a wasteful number, since it uses less digits than its factorization.

155021958456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88482935 (or 88482931 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 51.

The spelling of 155021958456 in words is "one hundred fifty-five billion, twenty-one million, nine hundred fifty-eight thousand, four hundred fifty-six".