155764065940 has 48 divisors (see below), whose sum is σ = 383937386112. Its totient is φ = 51961447296.

The previous prime is 155764065929. The next prime is 155764065991. The reversal of 155764065940 is 49560467551.

It is a happy number.

It is a congruent number.

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, 15029962 + ... + 15040321.

It is an arithmetic number, because the mean of its divisors is an integer number (7998695544).

Almost surely, 2^155764065940 is an apocalyptic number.

155764065940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155764065940 is an abundant number, since it is smaller than the sum of its proper divisors (228173320172).

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

155764065940 is a wasteful number, since it uses less digits than its factorization.

155764065940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30070336 (or 30070334 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 155764065940 in words is "one hundred fifty-five billion, seven hundred sixty-four million, sixty-five thousand, nine hundred forty".