2031261851816 has 32 divisors (see below), whose sum is σ = 3913086334080. Its totient is φ = 987793704000.

The previous prime is 2031261851807. The next prime is 2031261851833. The reversal of 2031261851816 is 6181581621302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589940 + ... + 2100131.

It is an arithmetic number, because the mean of its divisors is an integer number (122283947940).

Almost surely, 2^{2031261851816} is an apocalyptic number.

It is an amenable number.

2031261851816 is a deficient number, since it is larger than the sum of its proper divisors (1881824482264).

2031261851816 is a wasteful number, since it uses less digits than its factorization.

2031261851816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692665 (or 2692661 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 2031261851816 in words is "two trillion, thirty-one billion, two hundred sixty-one million, eight hundred fifty-one thousand, eight hundred sixteen".