42099827815812 has 48 divisors (see below), whose sum is σ = 105808628261952. Its totient is φ = 12951427785600.

The previous prime is 42099827815811. The next prime is 42099827815813. The reversal of 42099827815812 is 21851872899024.

It is an interprime number because it is at equal distance from previous prime (42099827815811) and next prime (42099827815813).

It is not an unprimeable number, because it can be changed into a prime (42099827815811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23782314 + ... + 25491137.

It is an arithmetic number, because the mean of its divisors is an integer number (2204346422124).

Almost surely, 2^{42099827815812} is an apocalyptic number.

It is an amenable number.

42099827815812 is an abundant number, since it is smaller than the sum of its proper divisors (63708800446140).

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

42099827815812 is a wasteful number, since it uses less digits than its factorization.

42099827815812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49278948 (or 49278946 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 66.

The spelling of 42099827815812 in words is "forty-two trillion, ninety-nine billion, eight hundred twenty-seven million, eight hundred fifteen thousand, eight hundred twelve".