1951607085968 has 20 divisors (see below), whose sum is σ = 3789512788620. Its totient is φ = 973668301824.

The previous prime is 1951607085947. The next prime is 1951607086019. The reversal of 1951607085968 is 8695807061591.

It can be written as a sum of positive squares in 2 ways, for example, as 674553401344 + 1277053684624 = 821312^2 + 1130068^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133445033 + ... + 133459656.

It is an arithmetic number, because the mean of its divisors is an integer number (189475639431).

Almost surely, 2^{1951607085968} is an apocalyptic number.

It is an amenable number.

1951607085968 is a deficient number, since it is larger than the sum of its proper divisors (1837905702652).

1951607085968 is a wasteful number, since it uses less digits than its factorization.

1951607085968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266905154 (or 266905148 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 65.

The spelling of 1951607085968 in words is "one trillion, nine hundred fifty-one billion, six hundred seven million, eighty-five thousand, nine hundred sixty-eight".