100651121620537 has 2 divisors, whose sum is σ = 100651121620538. Its totient is φ = 100651121620536.

The previous prime is 100651121620501. The next prime is 100651121620561. The reversal of 100651121620537 is 735026121156001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57328081683961 + 43323039936576 = 7571531^2 + 6582024^2 .

It is a cyclic number.

It is not a de Polignac number, because 100651121620537 - 2⁴³ = 91855028598329 is a prime.

It is a super-3 number, since 3×100651121620537³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100651121620537.

It is not a weakly prime, because it can be changed into another prime (100651121623537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50325560810268 + 50325560810269.

It is an arithmetic number, because the mean of its divisors is an integer number (50325560810269).

Almost surely, 2^{100651121620537} is an apocalyptic number.

It is an amenable number.

100651121620537 is a deficient number, since it is larger than the sum of its proper divisors (1).

100651121620537 is an equidigital number, since it uses as much as digits as its factorization.

100651121620537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 40.

Adding to 100651121620537 its reverse (735026121156001), we get a palindrome (835677242776538).

The spelling of 100651121620537 in words is "one hundred trillion, six hundred fifty-one billion, one hundred twenty-one million, six hundred twenty thousand, five hundred thirty-seven".