7949961367920 has 240 divisors, whose sum is σ = 31366211621472. Its totient is φ = 1779012311040.

The previous prime is 7949961367903. The next prime is 7949961367993. The reversal of 7949961367920 is 297631699497.

7949961367920 is a `hidden beast` number, since 7 + 9 + 499 + 61 + 3 + 6 + 79 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38504079 + ... + 38709998.

Almost surely, 2^{7949961367920} is an apocalyptic number.

It is an amenable number.

7949961367920 is an abundant number, since it is smaller than the sum of its proper divisors (23416250253552).

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

7949961367920 is a wasteful number, since it uses less digits than its factorization.

7949961367920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77214120 (or 77214111 counting only the distinct ones).

The product of its (nonzero) digits is 277766496, while the sum is 72.

The spelling of 7949961367920 in words is "seven trillion, nine hundred forty-nine billion, nine hundred sixty-one million, three hundred sixty-seven thousand, nine hundred twenty".