721270568045 has 32 divisors (see below), whose sum is σ = 916127138304. Its totient is φ = 544006355200.

The previous prime is 721270568023. The next prime is 721270568047. The reversal of 721270568045 is 540865072127.

It is not a de Polignac number, because 721270568045 - 2²² = 721266373741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721270568047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36675515 + ... + 36695175.

It is an arithmetic number, because the mean of its divisors is an integer number (28628973072).

Almost surely, 2^721270568045 is an apocalyptic number.

It is an amenable number.

721270568045 is a deficient number, since it is larger than the sum of its proper divisors (194856570259).

721270568045 is a wasteful number, since it uses less digits than its factorization.

721270568045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24253.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 721270568045 in words is "seven hundred twenty-one billion, two hundred seventy million, five hundred sixty-eight thousand, forty-five".