140520578730 has 32 divisors (see below), whose sum is σ = 385427873664. Its totient is φ = 32118989376.

The previous prime is 140520578719. The next prime is 140520578753. The reversal of 140520578730 is 37875025041.

It is a super-2 number, since 2×140520578730² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 334572597 + ... + 334573016.

It is an arithmetic number, because the mean of its divisors is an integer number (12044621052).

Almost surely, 2^140520578730 is an apocalyptic number.

140520578730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140520578730 is an abundant number, since it is smaller than the sum of its proper divisors (244907294934).

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

140520578730 is a wasteful number, since it uses less digits than its factorization.

140520578730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669145630.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 140520578730 in words is "one hundred forty billion, five hundred twenty million, five hundred seventy-eight thousand, seven hundred thirty".