121577374880073 has 80 divisors (see below), whose sum is σ = 214290610136064. Its totient is φ = 67220922193920.

The previous prime is 121577374880029. The next prime is 121577374880119. The reversal of 121577374880073 is 370088473775121.

121577374880073 is a `hidden beast` number, since 1 + 2 + 1 + 57 + 7 + 37 + 488 + 0 + 0 + 73 = 666.

It is not a de Polignac number, because 121577374880073 - 2¹⁶ = 121577374814537 is a prime.

It is a super-2 number, since 2×121577374880073² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (121577374080073) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 109426561 + ... + 110532017.

Almost surely, 2^{121577374880073} is an apocalyptic number.

It is an amenable number.

121577374880073 is a deficient number, since it is larger than the sum of its proper divisors (92713235255991).

121577374880073 is a wasteful number, since it uses less digits than its factorization.

121577374880073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111764 (or 1111755 counting only the distinct ones).

The product of its (nonzero) digits is 55319040, while the sum is 63.

The spelling of 121577374880073 in words is "one hundred twenty-one trillion, five hundred seventy-seven billion, three hundred seventy-four million, eight hundred eighty thousand, seventy-three".