140797178820 has 36 divisors (see below), whose sum is σ = 427084776300. Its totient is φ = 37545914304.

The previous prime is 140797178761. The next prime is 140797178843. The reversal of 140797178820 is 28871797041.

140797178820 is a `hidden beast` number, since 1 + 407 + 97 + 1 + 78 + 82 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16853751684 + 123943427136 = 129822^2 + 352056^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391103095 + ... + 391103454.

Almost surely, 2^140797178820 is an apocalyptic number.

140797178820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140797178820 is an abundant number, since it is smaller than the sum of its proper divisors (286287597480).

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

140797178820 is a wasteful number, since it uses less digits than its factorization.

140797178820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782206564 (or 782206559 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 54.

The spelling of 140797178820 in words is "one hundred forty billion, seven hundred ninety-seven million, one hundred seventy-eight thousand, eight hundred twenty".