7922187943920 has 240 divisors, whose sum is σ = 26709458154912. Its totient is φ = 2104331581440.

The previous prime is 7922187943907. The next prime is 7922187943931. The reversal of 7922187943920 is 293497812297.

7922187943920 is a `hidden beast` number, since 7 + 92 + 21 + 8 + 79 + 439 + 20 = 666.

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

It is a super-2 number, since 2×7922187943920² (a number of 27 digits) contains 22 as substring.

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, 209501815 + ... + 209539625.

Almost surely, 2^{7922187943920} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7922187943920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13354729077456).

7922187943920 is an abundant number, since it is smaller than the sum of its proper divisors (18787270210992).

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

7922187943920 is a wasteful number, since it uses less digits than its factorization.

7922187943920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38960 (or 38951 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 7922187943920 in words is "seven trillion, nine hundred twenty-two billion, one hundred eighty-seven million, nine hundred forty-three thousand, nine hundred twenty".