72144465802 has 8 divisors (see below), whose sum is σ = 114582386916. Its totient is φ = 33950336832.

The previous prime is 72144465787. The next prime is 72144465839. The reversal of 72144465802 is 20856444127.

It can be written as a sum of positive squares in 2 ways, for example, as 68240590441 + 3903875361 = 261229^2 + 62481^2 .

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

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, 1060947993 + ... + 1060948060.

Almost surely, 2^72144465802 is an apocalyptic number.

72144465802 is a deficient number, since it is larger than the sum of its proper divisors (42437921114).

72144465802 is a wasteful number, since it uses less digits than its factorization.

72144465802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121896072.

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 72144465802 in words is "seventy-two billion, one hundred forty-four million, four hundred sixty-five thousand, eight hundred two".