648962381169 has 48 divisors (see below), whose sum is σ = 1018805424000. Its totient is φ = 412023148416.

The previous prime is 648962381159. The next prime is 648962381203. The reversal of 648962381169 is 961183269846.

648962381169 is a `hidden beast` number, since 6 + 4 + 8 + 96 + 2 + 381 + 169 = 666.

It is not a de Polignac number, because 648962381169 - 2⁴ = 648962381153 is a prime.

It is a super-2 number, since 2×648962381169² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (648962381149) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1026357 + ... + 1533405.

It is an arithmetic number, because the mean of its divisors is an integer number (21225113000).

Almost surely, 2^648962381169 is an apocalyptic number.

648962381169 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

648962381169 is a deficient number, since it is larger than the sum of its proper divisors (369843042831).

648962381169 is a wasteful number, since it uses less digits than its factorization.

648962381169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507316 (or 507304 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 648962381169 in words is "six hundred forty-eight billion, nine hundred sixty-two million, three hundred eighty-one thousand, one hundred sixty-nine".