10051172556621 has 16 divisors (see below), whose sum is σ = 15354267174528. Its totient is φ = 5729204160000.

The previous prime is 10051172556611. The next prime is 10051172556641. The reversal of 10051172556621 is 12665527115001.

It is a happy number.

It is not a de Polignac number, because 10051172556621 - 2⁷ = 10051172556493 is a prime.

It is a super-2 number, since 2×10051172556621² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10051172556611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596783680 + ... + 596800521.

It is an arithmetic number, because the mean of its divisors is an integer number (959641698408).

Almost surely, 2^{10051172556621} is an apocalyptic number.

It is an amenable number.

10051172556621 is a deficient number, since it is larger than the sum of its proper divisors (5303094617907).

10051172556621 is a wasteful number, since it uses less digits than its factorization.

10051172556621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193584612.

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 10051172556621 in words is "ten trillion, fifty-one billion, one hundred seventy-two million, five hundred fifty-six thousand, six hundred twenty-one".