6402638632054 has 16 divisors (see below), whose sum is σ = 11453167243008. Its totient is φ = 2624684159592.

The previous prime is 6402638632043. The next prime is 6402638632081. The reversal of 6402638632054 is 4502368362046.

It is a junction number, because it is equal to n+sod(n) for n = 6402638631989 and 6402638632007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9941985132 + ... + 9941985775.

It is an arithmetic number, because the mean of its divisors is an integer number (715822952688).

Almost surely, 2^{6402638632054} is an apocalyptic number.

6402638632054 is a deficient number, since it is larger than the sum of its proper divisors (5050528610954).

6402638632054 is a wasteful number, since it uses less digits than its factorization.

6402638632054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19883970939.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 6402638632054 in words is "six trillion, four hundred two billion, six hundred thirty-eight million, six hundred thirty-two thousand, fifty-four".