121640109084624 has 160 divisors (see below), whose sum is σ = 340064064729088. Its totient is φ = 37244733120000.

The previous prime is 121640109084587. The next prime is 121640109084737. The reversal of 121640109084624 is 426480901046121.

It is a super-2 number, since 2×121640109084624² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 920396949 + ... + 920529099.

Almost surely, 2^{121640109084624} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121640109084624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170032032364544).

121640109084624 is an abundant number, since it is smaller than the sum of its proper divisors (218423955644464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121640109084624 is a wasteful number, since it uses less digits than its factorization.

121640109084624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139377 (or 139371 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 121640109084624 in words is "one hundred twenty-one trillion, six hundred forty billion, one hundred nine million, eighty-four thousand, six hundred twenty-four".