10621538478753 has 64 divisors (see below), whose sum is σ = 15307309056000. Its totient is φ = 6529985501760.

The previous prime is 10621538478737. The next prime is 10621538478757. The reversal of 10621538478753 is 35787483512601.

It is not a de Polignac number, because 10621538478753 - 2⁴ = 10621538478737 is a prime.

It is a super-2 number, since 2×10621538478753² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10621538478757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 940036698 + ... + 940047996.

It is an arithmetic number, because the mean of its divisors is an integer number (239176704000).

Almost surely, 2^{10621538478753} is an apocalyptic number.

It is an amenable number.

10621538478753 is a deficient number, since it is larger than the sum of its proper divisors (4685770577247).

10621538478753 is a wasteful number, since it uses less digits than its factorization.

10621538478753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13242.

The product of its (nonzero) digits is 33868800, while the sum is 60.

The spelling of 10621538478753 in words is "ten trillion, six hundred twenty-one billion, five hundred thirty-eight million, four hundred seventy-eight thousand, seven hundred fifty-three".