52195069440 has 160 divisors (see below), whose sum is σ = 185401481760. Its totient is φ = 13918666752.

The previous prime is 52195069439. The next prime is 52195069469. The reversal of 52195069440 is 4496059125.

52195069440 is a `hidden beast` number, since 5 + 2 + 19 + 506 + 94 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308449 + ... + 446688.

It is an arithmetic number, because the mean of its divisors is an integer number (1158759261).

Almost surely, 2^52195069440 is an apocalyptic number.

It is an amenable number.

52195069440 is an abundant number, since it is smaller than the sum of its proper divisors (133206412320).

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

52195069440 is an equidigital number, since it uses as much as digits as its factorization.

52195069440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755169 (or 755147 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 52195069440 in words is "fifty-two billion, one hundred ninety-five million, sixty-nine thousand, four hundred forty".