275131213500 has 384 divisors, whose sum is σ = 949662185472. Its totient is φ = 61017600000.

The previous prime is 275131213499. The next prime is 275131213579. The reversal of 275131213500 is 5312131572.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24232825 + ... + 24244175.

It is an arithmetic number, because the mean of its divisors is an integer number (2473078608).

Almost surely, 2^275131213500 is an apocalyptic number.

275131213500 is a gapful number since it is divisible by the number (20) 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 275131213500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474831092736).

275131213500 is an abundant number, since it is smaller than the sum of its proper divisors (674530971972).

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

275131213500 is a wasteful number, since it uses less digits than its factorization.

275131213500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11510 (or 11498 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The spelling of 275131213500 in words is "two hundred seventy-five billion, one hundred thirty-one million, two hundred thirteen thousand, five hundred".