1401644732472 has 96 divisors (see below), whose sum is σ = 3810335911200. Its totient is φ = 465467150592.

The previous prime is 1401644732471. The next prime is 1401644732489. The reversal of 1401644732472 is 2742374461041.

1401644732472 is a `hidden beast` number, since 14 + 0 + 164 + 4 + 7 + 3 + 2 + 472 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401644732471) 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, 40814973 + ... + 40849299.

It is an arithmetic number, because the mean of its divisors is an integer number (39690999075).

Almost surely, 2^{1401644732472} is an apocalyptic number.

1401644732472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1401644732472 is an abundant number, since it is smaller than the sum of its proper divisors (2408691178728).

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

1401644732472 is a wasteful number, since it uses less digits than its factorization.

1401644732472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36445 (or 36438 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 1401644732472 in words is "one trillion, four hundred one billion, six hundred forty-four million, seven hundred thirty-two thousand, four hundred seventy-two".