921462857705 has 12 divisors (see below), whose sum is σ = 1197356471820. Its totient is φ = 680464878912.

The previous prime is 921462857701. The next prime is 921462857719. The reversal of 921462857705 is 507758264129.

It can be written as a sum of positive squares in 6 ways, for example, as 111126222736 + 810336634969 = 333356^2 + 900187^2 .

It is not a de Polignac number, because 921462857705 - 2² = 921462857701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (921462857701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 545243450 + ... + 545245139.

It is an arithmetic number, because the mean of its divisors is an integer number (99779705985).

Almost surely, 2^921462857705 is an apocalyptic number.

It is an amenable number.

921462857705 is a deficient number, since it is larger than the sum of its proper divisors (275893614115).

921462857705 is a wasteful number, since it uses less digits than its factorization.

921462857705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090488620 (or 1090488607 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 921462857705 in words is "nine hundred twenty-one billion, four hundred sixty-two million, eight hundred fifty-seven thousand, seven hundred five".