651192278040 has 160 divisors (see below), whose sum is σ = 2317478597280. Its totient is φ = 163436479488.

The previous prime is 651192278039. The next prime is 651192278069. The reversal of 651192278040 is 40872291156.

651192278040 is a `hidden beast` number, since 6 + 511 + 9 + 22 + 78 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5856252 + ... + 5966411.

It is an arithmetic number, because the mean of its divisors is an integer number (14484241233).

Almost surely, 2^651192278040 is an apocalyptic number.

651192278040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

651192278040 is an abundant number, since it is smaller than the sum of its proper divisors (1666286319240).

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

651192278040 is a wasteful number, since it uses less digits than its factorization.

651192278040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822703 (or 11822690 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 651192278040 in words is "six hundred fifty-one billion, one hundred ninety-two million, two hundred seventy-eight thousand, forty".