100158821077 has 12 divisors (see below), whose sum is σ = 116555951820. Its totient is φ = 85817503296.

The previous prime is 100158821071. The next prime is 100158821089. The reversal of 100158821077 is 770128851001.

It can be written as a sum of positive squares in 2 ways, for example, as 91369571076 + 8789250001 = 302274^2 + 93751^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100158821077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100158821071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262302 + ... + 518767.

It is an arithmetic number, because the mean of its divisors is an integer number (9712995985).

Almost surely, 2^100158821077 is an apocalyptic number.

It is an amenable number.

100158821077 is a deficient number, since it is larger than the sum of its proper divisors (16397130743).

100158821077 is an equidigital number, since it uses as much as digits as its factorization.

100158821077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783700 (or 783693 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 40.

The spelling of 100158821077 in words is "one hundred billion, one hundred fifty-eight million, eight hundred twenty-one thousand, seventy-seven".