121740695320 has 64 divisors (see below), whose sum is σ = 281071296000. Its totient is φ = 47434154880.

The previous prime is 121740695299. The next prime is 121740695333. The reversal of 121740695320 is 23596047121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243231 + ... + 550129.

It is an arithmetic number, because the mean of its divisors is an integer number (4391739000).

Almost surely, 2^121740695320 is an apocalyptic number.

121740695320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121740695320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140535648000).

121740695320 is an abundant number, since it is smaller than the sum of its proper divisors (159330600680).

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

121740695320 is a wasteful number, since it uses less digits than its factorization.

121740695320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307168 (or 307164 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 121740695320 in words is "one hundred twenty-one billion, seven hundred forty million, six hundred ninety-five thousand, three hundred twenty".