618831131370451 has 16 divisors (see below), whose sum is σ = 621991774978560. Its totient is φ = 615672680353920.

The previous prime is 618831131370421. The next prime is 618831131370457. The reversal of 618831131370451 is 154073131138816.

It is a cyclic number.

It is not a de Polignac number, because 618831131370451 - 2¹⁹ = 618831130846163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618831131370457) 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, 6689803066 + ... + 6689895568.

It is an arithmetic number, because the mean of its divisors is an integer number (38874485936160).

Almost surely, 2^{618831131370451} is an apocalyptic number.

618831131370451 is a deficient number, since it is larger than the sum of its proper divisors (3160643608109).

618831131370451 is a wasteful number, since it uses less digits than its factorization.

618831131370451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103986.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 618831131370451 in words is "six hundred eighteen trillion, eight hundred thirty-one billion, one hundred thirty-one million, three hundred seventy thousand, four hundred fifty-one".