52065491898 has 64 divisors (see below), whose sum is σ = 127888063488. Its totient is φ = 13791824640.

The previous prime is 52065491879. The next prime is 52065491963. The reversal of 52065491898 is 89819456025.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 496348 + ... + 592023.

It is an arithmetic number, because the mean of its divisors is an integer number (1998250992).

Almost surely, 2^52065491898 is an apocalyptic number.

52065491898 is an abundant number, since it is smaller than the sum of its proper divisors (75822571590).

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

52065491898 is a wasteful number, since it uses less digits than its factorization.

52065491898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088467.

The product of its (nonzero) digits is 6220800, while the sum is 57.

The spelling of 52065491898 in words is "fifty-two billion, sixty-five million, four hundred ninety-one thousand, eight hundred ninety-eight".