721294000070 has 32 divisors (see below), whose sum is σ = 1484046059328. Its totient is φ = 247260590208.

The previous prime is 721294000057. The next prime is 721294000073. The reversal of 721294000070 is 70000492127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721294000073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402509 + ... + 1266728.

It is an arithmetic number, because the mean of its divisors is an integer number (46376439354).

Almost surely, 2^721294000070 is an apocalyptic number.

721294000070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

721294000070 is an abundant number, since it is smaller than the sum of its proper divisors (762752059258).

721294000070 is a wasteful number, since it uses less digits than its factorization.

721294000070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675424.

The product of its (nonzero) digits is 7056, while the sum is 32.

Adding to 721294000070 its reverse (70000492127), we get a palindrome (791294492197).

The spelling of 721294000070 in words is "seven hundred twenty-one billion, two hundred ninety-four million, seventy", and thus it is an aban number.