712991626815 has 16 divisors (see below), whose sum is σ = 1228539418848. Its totient is φ = 351011262336.

The previous prime is 712991626799. The next prime is 712991626817. The reversal of 712991626815 is 518626199217.

It is a happy number.

712991626815 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 712991626815 - 2⁴ = 712991626799 is a prime.

It is a super-4 number, since 4×712991626815⁴ (a number of 49 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712991626817) 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, 1828183464 + ... + 1828183853.

It is an arithmetic number, because the mean of its divisors is an integer number (76783713678).

Almost surely, 2^712991626815 is an apocalyptic number.

712991626815 is a deficient number, since it is larger than the sum of its proper divisors (515547792033).

712991626815 is a wasteful number, since it uses less digits than its factorization.

712991626815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656367338.

The product of its digits is 3265920, while the sum is 57.

The spelling of 712991626815 in words is "seven hundred twelve billion, nine hundred ninety-one million, six hundred twenty-six thousand, eight hundred fifteen".