21062470674 has 64 divisors (see below), whose sum is σ = 48671723520. Its totient is φ = 5952061440.

The previous prime is 21062470651. The next prime is 21062470679. The reversal of 21062470674 is 47607426012.

It is a super-2 number, since 2×21062470674² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21062470679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1575442 + ... + 1588754.

It is an arithmetic number, because the mean of its divisors is an integer number (760495680).

Almost surely, 2^21062470674 is an apocalyptic number.

21062470674 is an abundant number, since it is smaller than the sum of its proper divisors (27609252846).

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

21062470674 is a wasteful number, since it uses less digits than its factorization.

21062470674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13735.

The product of its (nonzero) digits is 112896, while the sum is 39.

Adding to 21062470674 its reverse (47607426012), we get a palindrome (68669896686).

The spelling of 21062470674 in words is "twenty-one billion, sixty-two million, four hundred seventy thousand, six hundred seventy-four".