67406453507572 has 12 divisors (see below), whose sum is σ = 117961388276256. Its totient is φ = 33703199714360.

The previous prime is 67406453507567. The next prime is 67406453507597. The reversal of 67406453507572 is 27570535460476.

It is a super-2 number, since 2×67406453507572² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67406453507572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508498 + ... + 11622025.

It is an arithmetic number, because the mean of its divisors is an integer number (9830115689688).

Almost surely, 2^{67406453507572} is an apocalyptic number.

It is an amenable number.

67406453507572 is a deficient number, since it is larger than the sum of its proper divisors (50554934768684).

67406453507572 is a wasteful number, since it uses less digits than its factorization.

67406453507572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13519718 (or 13519716 counting only the distinct ones).

The product of its (nonzero) digits is 148176000, while the sum is 61.

The spelling of 67406453507572 in words is "sixty-seven trillion, four hundred six billion, four hundred fifty-three million, five hundred seven thousand, five hundred seventy-two".