120157661811 has 8 divisors (see below), whose sum is σ = 174774780864. Its totient is φ = 72822825320.

The previous prime is 120157661807. The next prime is 120157661843. The reversal of 120157661811 is 118166751021.

It is a happy number.

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 120157661811 - 2² = 120157661807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120157661811.

It is not an unprimeable number, because it can be changed into a prime (120157661711) 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, 1820570601 + ... + 1820570666.

It is an arithmetic number, because the mean of its divisors is an integer number (21846847608).

Almost surely, 2^120157661811 is an apocalyptic number.

120157661811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120157661811 is a deficient number, since it is larger than the sum of its proper divisors (54617119053).

120157661811 is a wasteful number, since it uses less digits than its factorization.

120157661811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641141281.

The product of its (nonzero) digits is 20160, while the sum is 39.

The spelling of 120157661811 in words is "one hundred twenty billion, one hundred fifty-seven million, six hundred sixty-one thousand, eight hundred eleven".