21072407302 has 16 divisors (see below), whose sum is σ = 31919968080. Its totient is φ = 10432516608.

The previous prime is 21072407287. The next prime is 21072407303. The reversal of 21072407302 is 20370427012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21072407303) 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, 423478 + ... + 470614.

It is an arithmetic number, because the mean of its divisors is an integer number (1994998005).

Almost surely, 2^21072407302 is an apocalyptic number.

21072407302 is a deficient number, since it is larger than the sum of its proper divisors (10847560778).

21072407302 is a wasteful number, since it uses less digits than its factorization.

21072407302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49335.

The product of its (nonzero) digits is 4704, while the sum is 28.

The spelling of 21072407302 in words is "twenty-one billion, seventy-two million, four hundred seven thousand, three hundred two".