99401260020 has 24 divisors (see below), whose sum is σ = 278323528224. Its totient is φ = 26507002656.

The previous prime is 99401259989. The next prime is 99401260027. The reversal of 99401260020 is 2006210499.

It is a super-2 number, since 2×99401260020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99401260027) 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, 828343774 + ... + 828343893.

It is an arithmetic number, because the mean of its divisors is an integer number (11596813676).

Almost surely, 2^99401260020 is an apocalyptic number.

It is an amenable number.

99401260020 is an abundant number, since it is smaller than the sum of its proper divisors (178922268204).

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

99401260020 is a wasteful number, since it uses less digits than its factorization.

99401260020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656687679 (or 1656687677 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 99401260020 in words is "ninety-nine billion, four hundred one million, two hundred sixty thousand, twenty".