155749491876 has 48 divisors (see below), whose sum is σ = 397165204800. Its totient is φ = 47112059520.

The previous prime is 155749491871. The next prime is 155749491883. The reversal of 155749491876 is 678194947551.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (155749491871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985651 + ... + 1132698.

It is an arithmetic number, because the mean of its divisors is an integer number (8274275100).

Almost surely, 2^155749491876 is an apocalyptic number.

It is an amenable number.

155749491876 is an abundant number, since it is smaller than the sum of its proper divisors (241415712924).

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

155749491876 is a wasteful number, since it uses less digits than its factorization.

155749491876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118924 (or 2118922 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 66.

The spelling of 155749491876 in words is "one hundred fifty-five billion, seven hundred forty-nine million, four hundred ninety-one thousand, eight hundred seventy-six".