7637468021 has 16 divisors (see below), whose sum is σ = 8073717120. Its totient is φ = 7210082880.

The previous prime is 7637468009. The next prime is 7637468029. The reversal of 7637468021 is 1208647367.

It is a cyclic number.

It is not a de Polignac number, because 7637468021 - 2²⁶ = 7570359157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7637468029) 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, 3261311 + ... + 3263651.

It is an arithmetic number, because the mean of its divisors is an integer number (504607320).

Almost surely, 2^7637468021 is an apocalyptic number.

It is an amenable number.

7637468021 is a deficient number, since it is larger than the sum of its proper divisors (436249099).

7637468021 is a wasteful number, since it uses less digits than its factorization.

7637468021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 7637468021 is about 87392.6085032367. The cubic root of 7637468021 is about 1969.3208014436.

The spelling of 7637468021 in words is "seven billion, six hundred thirty-seven million, four hundred sixty-eight thousand, twenty-one".