73877220621 has 12 divisors (see below), whose sum is σ = 107270242560. Its totient is φ = 48993618120.

The previous prime is 73877220601. The next prime is 73877220653. The reversal of 73877220621 is 12602277837.

It is not a de Polignac number, because 73877220621 - 2⁷ = 73877220493 is a prime.

It is a super-3 number, since 3×73877220621³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73877220601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21486711 + ... + 21490148.

It is an arithmetic number, because the mean of its divisors is an integer number (8939186880).

Almost surely, 2^73877220621 is an apocalyptic number.

It is an amenable number.

73877220621 is a deficient number, since it is larger than the sum of its proper divisors (33393021939).

73877220621 is a wasteful number, since it uses less digits than its factorization.

73877220621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42977056 (or 42977053 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 73877220621 in words is "seventy-three billion, eight hundred seventy-seven million, two hundred twenty thousand, six hundred twenty-one".