21357713006 has 24 divisors (see below), whose sum is σ = 37292961816. Its totient is φ = 9146936400.

The previous prime is 21357712993. The next prime is 21357713077. The reversal of 21357713006 is 60031775312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67100 + ... + 217296.

It is an arithmetic number, because the mean of its divisors is an integer number (1553873409).

Almost surely, 2^21357713006 is an apocalyptic number.

21357713006 is a deficient number, since it is larger than the sum of its proper divisors (15935248810).

21357713006 is a wasteful number, since it uses less digits than its factorization.

21357713006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151664 (or 151657 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The spelling of 21357713006 in words is "twenty-one billion, three hundred fifty-seven million, seven hundred thirteen thousand, six".