120732951581 has 8 divisors (see below), whose sum is σ = 131842672704. Its totient is φ = 109645563520.

The previous prime is 120732951539. The next prime is 120732951631. The reversal of 120732951581 is 185159237021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120732951581 - 2³⁰ = 119659209757 is a prime.

It is a super-2 number, since 2×120732951581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120732971581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5571956 + ... + 5593581.

It is an arithmetic number, because the mean of its divisors is an integer number (16480334088).

Almost surely, 2^120732951581 is an apocalyptic number.

120732951581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120732951581 is a deficient number, since it is larger than the sum of its proper divisors (11109721123).

120732951581 is a wasteful number, since it uses less digits than its factorization.

120732951581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166531.

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 120732951581 in words is "one hundred twenty billion, seven hundred thirty-two million, nine hundred fifty-one thousand, five hundred eighty-one".