155785106379 has 48 divisors (see below), whose sum is σ = 253987731200. Its totient is φ = 83180376576.

The previous prime is 155785106333. The next prime is 155785106417. The reversal of 155785106379 is 973601587551.

It is a happy number.

It is not a de Polignac number, because 155785106379 - 2⁸ = 155785106123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155785106179) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 751257 + ... + 935925.

Almost surely, 2^155785106379 is an apocalyptic number.

155785106379 is a deficient number, since it is larger than the sum of its proper divisors (98202624821).

155785106379 is a wasteful number, since it uses less digits than its factorization.

155785106379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184852 (or 184835 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 57.

The spelling of 155785106379 in words is "one hundred fifty-five billion, seven hundred eighty-five million, one hundred six thousand, three hundred seventy-nine".