46139297920 has 32 divisors (see below), whose sum is σ = 110301760620. Its totient is φ = 18455718912.

The previous prime is 46139297803. The next prime is 46139297927. The reversal of 46139297920 is 2979293164.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42005322304 + 4133975616 = 204952^2 + 64296^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (46139297927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36045687 + ... + 36046966.

Almost surely, 2^46139297920 is an apocalyptic number.

46139297920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

46139297920 is an abundant number, since it is smaller than the sum of its proper divisors (64162462700).

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

46139297920 is an equidigital number, since it uses as much as digits as its factorization.

46139297920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72092672 (or 72092660 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 46139297920 in words is "forty-six billion, one hundred thirty-nine million, two hundred ninety-seven thousand, nine hundred twenty".