642454065010 has 32 divisors (see below), whose sum is σ = 1165155522480. Its totient is φ = 255040760832.

The previous prime is 642454065007. The next prime is 642454065053. The reversal of 642454065010 is 10560454246.

It can be written as a sum of positive squares in 8 ways, for example, as 446677018921 + 195777046089 = 668339^2 + 442467^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5500296 + ... + 5615884.

Almost surely, 2^642454065010 is an apocalyptic number.

642454065010 is a deficient number, since it is larger than the sum of its proper divisors (522701457470).

642454065010 is a wasteful number, since it uses less digits than its factorization.

642454065010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119790.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 642454065010 in words is "six hundred forty-two billion, four hundred fifty-four million, sixty-five thousand, ten".