971893257770 has 16 divisors (see below), whose sum is σ = 1764889351560. Its totient is φ = 385316972544.

The previous prime is 971893257767. The next prime is 971893257799. The reversal of 971893257770 is 77752398179.

It can be written as a sum of positive squares in 4 ways, for example, as 655175306041 + 316717951729 = 809429^2 + 562777^2 .

It is a junction number, because it is equal to n+sod(n) for n = 971893257697 and 971893257706.

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, 430040135 + ... + 430042394.

Almost surely, 2^971893257770 is an apocalyptic number.

971893257770 is a deficient number, since it is larger than the sum of its proper divisors (792996093790).

971893257770 is a wasteful number, since it uses less digits than its factorization.

971893257770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860082649.

The product of its (nonzero) digits is 46675440, while the sum is 65.

The spelling of 971893257770 in words is "nine hundred seventy-one billion, eight hundred ninety-three million, two hundred fifty-seven thousand, seven hundred seventy".