72661088954 has 8 divisors (see below), whose sum is σ = 108994565088. Its totient is φ = 36329567260.

The previous prime is 72661088897. The next prime is 72661088957. The reversal of 72661088954 is 45988016627.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72661088954² (a number of 23 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 72661088954.

It is not an unprimeable number, because it can be changed into a prime (72661088957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391832 + ... + 546675.

It is an arithmetic number, because the mean of its divisors is an integer number (13624320636).

Almost surely, 2^72661088954 is an apocalyptic number.

72661088954 is a deficient number, since it is larger than the sum of its proper divisors (36333476134).

72661088954 is a wasteful number, since it uses less digits than its factorization.

72661088954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977220.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 72661088954 in words is "seventy-two billion, six hundred sixty-one million, eighty-eight thousand, nine hundred fifty-four".