72646425573443 has 6 divisors (see below), whose sum is σ = 77171116439916. Its totient is φ = 68373106421792.

The previous prime is 72646425573439. The next prime is 72646425573487. The reversal of 72646425573443 is 34437552464627.

It is a happy number.

It is not a de Polignac number, because 72646425573443 - 2² = 72646425573439 is a prime.

It is a super-2 number, since 2×72646425573443² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72646425573643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125685857105 + ... + 125685857682.

It is an arithmetic number, because the mean of its divisors is an integer number (12861852739986).

Almost surely, 2^{72646425573443} is an apocalyptic number.

72646425573443 is a deficient number, since it is larger than the sum of its proper divisors (4524690866473).

72646425573443 is a wasteful number, since it uses less digits than its factorization.

72646425573443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251371714821 (or 251371714804 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 62.

The spelling of 72646425573443 in words is "seventy-two trillion, six hundred forty-six billion, four hundred twenty-five million, five hundred seventy-three thousand, four hundred forty-three".