21376029674 has 16 divisors (see below), whose sum is σ = 32817979008. Its totient is φ = 10437699552.

The previous prime is 21376029613. The next prime is 21376029679. The reversal of 21376029674 is 47692067312.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (21376029679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205844 + ... + 291759.

It is an arithmetic number, because the mean of its divisors is an integer number (2051123688).

Almost surely, 2^21376029674 is an apocalyptic number.

21376029674 is a deficient number, since it is larger than the sum of its proper divisors (11441949334).

21376029674 is a wasteful number, since it uses less digits than its factorization.

21376029674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498109.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 21376029674 in words is "twenty-one billion, three hundred seventy-six million, twenty-nine thousand, six hundred seventy-four".