100651121620552 has 8 divisors (see below), whose sum is σ = 188720853038550. Its totient is φ = 50325560810272.

The previous prime is 100651121620537. The next prime is 100651121620561. The reversal of 100651121620552 is 255026121156001.

It can be written as a sum of positive squares in only one way, i.e., 90240006276676 + 10411115343876 = 9499474^2 + 3226626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×100651121620552³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6290695101277 + ... + 6290695101292.

Almost surely, 2^{100651121620552} is an apocalyptic number.

It is an amenable number.

100651121620552 is a deficient number, since it is larger than the sum of its proper divisors (88069731417998).

100651121620552 is a wasteful number, since it uses less digits than its factorization.

100651121620552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12581390202575 (or 12581390202571 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

Adding to 100651121620552 its reverse (255026121156001), we get a palindrome (355677242776553).

The spelling of 100651121620552 in words is "one hundred trillion, six hundred fifty-one billion, one hundred twenty-one million, six hundred twenty thousand, five hundred fifty-two".