155169898252 has 6 divisors (see below), whose sum is σ = 271547321948. Its totient is φ = 77584949124.

The previous prime is 155169898249. The next prime is 155169898253. The reversal of 155169898252 is 252898961551.

It is a super-3 number, since 3×155169898252³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (155169898253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19396237278 + ... + 19396237285.

Almost surely, 2^155169898252 is an apocalyptic number.

It is an amenable number.

155169898252 is a deficient number, since it is larger than the sum of its proper divisors (116377423696).

155169898252 is a wasteful number, since it uses less digits than its factorization.

155169898252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38792474567 (or 38792474565 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 61.

The spelling of 155169898252 in words is "one hundred fifty-five billion, one hundred sixty-nine million, eight hundred ninety-eight thousand, two hundred fifty-two".