612717783081 has 16 divisors (see below), whose sum is σ = 830422528128. Its totient is φ = 401746953600.

The previous prime is 612717783079. The next prime is 612717783091. The reversal of 612717783081 is 180387717216.

It is not a de Polignac number, because 612717783081 - 2¹ = 612717783079 is a prime.

It is a super-2 number, since 2×612717783081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612717783091) 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, 2036436 + ... + 2317866.

It is an arithmetic number, because the mean of its divisors is an integer number (51901408008).

Almost surely, 2^612717783081 is an apocalyptic number.

612717783081 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

612717783081 is a deficient number, since it is larger than the sum of its proper divisors (217704745047).

612717783081 is a wasteful number, since it uses less digits than its factorization.

612717783081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293392.

The product of its (nonzero) digits is 790272, while the sum is 51.

The spelling of 612717783081 in words is "six hundred twelve billion, seven hundred seventeen million, seven hundred eighty-three thousand, eighty-one".