1234632644021 has 16 divisors (see below), whose sum is σ = 1459708333440. Its totient is φ = 1021734060480.

The previous prime is 1234632643961. The next prime is 1234632644023. The reversal of 1234632644021 is 1204462364321.

It is not a de Polignac number, because 1234632644021 - 2⁶ = 1234632643957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234632644023) 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, 8711690 + ... + 8852276.

It is an arithmetic number, because the mean of its divisors is an integer number (91231770840).

Almost surely, 2^{1234632644021} is an apocalyptic number.

It is an amenable number.

1234632644021 is a deficient number, since it is larger than the sum of its proper divisors (225075689419).

1234632644021 is a wasteful number, since it uses less digits than its factorization.

1234632644021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183884.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 1234632644021 in words is "one trillion, two hundred thirty-four billion, six hundred thirty-two million, six hundred forty-four thousand, twenty-one".