140731774081020 has 72 divisors (see below), whose sum is σ = 427582770590976. Its totient is φ = 37467252058752.

The previous prime is 140731774081009. The next prime is 140731774081027. The reversal of 140731774081020 is 20180477137041.

140731774081020 is a `hidden beast` number, since 1 + 4 + 0 + 73 + 1 + 77 + 408 + 102 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140731774081027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637608412 + ... + 637829091.

Almost surely, 2^{140731774081020} is an apocalyptic number.

140731774081020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140731774081020 is an abundant number, since it is smaller than the sum of its proper divisors (286850996509956).

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

140731774081020 is a wasteful number, since it uses less digits than its factorization.

140731774081020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275438131 (or 1275438126 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 140731774081020 in words is "one hundred forty trillion, seven hundred thirty-one billion, seven hundred seventy-four million, eighty-one thousand, twenty".