2990156117761 has 4 divisors (see below), whose sum is σ = 2990175822000. Its totient is φ = 2990136413524.

The previous prime is 2990156117759. The next prime is 2990156117777. The reversal of 2990156117761 is 1677116510992.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2990156117761 - 2¹ = 2990156117759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2990156117161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9622711 + ... + 9928588.

It is an arithmetic number, because the mean of its divisors is an integer number (747543955500).

Almost surely, 2^{2990156117761} is an apocalyptic number.

It is an amenable number.

2990156117761 is a deficient number, since it is larger than the sum of its proper divisors (19704239).

2990156117761 is a wasteful number, since it uses less digits than its factorization.

2990156117761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19704238.

The product of its (nonzero) digits is 1428840, while the sum is 55.

The spelling of 2990156117761 in words is "two trillion, nine hundred ninety billion, one hundred fifty-six million, one hundred seventeen thousand, seven hundred sixty-one".