155271213696 has 64 divisors (see below), whose sum is σ = 412847341920. Its totient is φ = 51705848832.

The previous prime is 155271213689. The next prime is 155271213697. The reversal of 155271213696 is 696312172551.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (155271213697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189411 + ... + 588573.

Almost surely, 2^155271213696 is an apocalyptic number.

155271213696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155271213696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206423670960).

155271213696 is an abundant number, since it is smaller than the sum of its proper divisors (257576128224).

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

155271213696 is a wasteful number, since it uses less digits than its factorization.

155271213696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400193 (or 400181 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The spelling of 155271213696 in words is "one hundred fifty-five billion, two hundred seventy-one million, two hundred thirteen thousand, six hundred ninety-six".