648545515771530 has 64 divisors (see below), whose sum is σ = 1676243343398400. Its totient is φ = 159641723045376.

The previous prime is 648545515771519. The next prime is 648545515771583. The reversal of 648545515771530 is 35177515545846.

It is a super-2 number, since 2×648545515771530² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435929871 + ... + 437415069.

It is an arithmetic number, because the mean of its divisors is an integer number (26191302240600).

Almost surely, 2^{648545515771530} is an apocalyptic number.

648545515771530 is an abundant number, since it is smaller than the sum of its proper divisors (1027697827626870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648545515771530 is a wasteful number, since it uses less digits than its factorization.

648545515771530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604895.

The product of its (nonzero) digits is 352800000, while the sum is 66.

The spelling of 648545515771530 in words is "six hundred forty-eight trillion, five hundred forty-five billion, five hundred fifteen million, seven hundred seventy-one thousand, five hundred thirty".