155900717451 has 12 divisors (see below), whose sum is σ = 227903057928. Its totient is φ = 102681596544.

The previous prime is 155900717407. The next prime is 155900717473. The reversal of 155900717451 is 154717009551.

155900717451 is a `hidden beast` number, since 1 + 5 + 590 + 0 + 7 + 1 + 7 + 4 + 51 = 666.

It is not a de Polignac number, because 155900717451 - 2⁶ = 155900717387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155900717397 and 155900717406.

It is not an unprimeable number, because it can be changed into a prime (155900717551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104350470 + ... + 104351963.

It is an arithmetic number, because the mean of its divisors is an integer number (18991921494).

Almost surely, 2^155900717451 is an apocalyptic number.

155900717451 is a deficient number, since it is larger than the sum of its proper divisors (72002340477).

155900717451 is a wasteful number, since it uses less digits than its factorization.

155900717451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208702522 (or 208702519 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 45.

The spelling of 155900717451 in words is "one hundred fifty-five billion, nine hundred million, seven hundred seventeen thousand, four hundred fifty-one".