72640535002022 has 64 divisors (see below), whose sum is σ = 123789027962880. Its totient is φ = 31692306001536.

The previous prime is 72640535001967. The next prime is 72640535002081. The reversal of 72640535002022 is 22020053504627.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500768888 + ... + 500913924.

It is an arithmetic number, because the mean of its divisors is an integer number (1934203561920).

Almost surely, 2^{72640535002022} is an apocalyptic number.

72640535002022 is a deficient number, since it is larger than the sum of its proper divisors (51148492960858).

72640535002022 is a wasteful number, since it uses less digits than its factorization.

72640535002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147285.

The product of its (nonzero) digits is 201600, while the sum is 38.

Adding to 72640535002022 its reverse (22020053504627), we get a palindrome (94660588506649).

The spelling of 72640535002022 in words is "seventy-two trillion, six hundred forty billion, five hundred thirty-five million, two thousand, twenty-two".