7955115840 has 448 divisors, whose sum is σ = 33115422720. Its totient is φ = 1759242240.

The previous prime is 7955115821. The next prime is 7955115853. The reversal of 7955115840 is 485115597.

7955115840 is a `hidden beast` number, since 7 + 9 + 55 + 11 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1872759 + ... + 1877001.

Almost surely, 2^7955115840 is an apocalyptic number.

7955115840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7955115840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16557711360).

7955115840 is an abundant number, since it is smaller than the sum of its proper divisors (25160306880).

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

7955115840 is a wasteful number, since it uses less digits than its factorization.

7955115840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The square root of 7955115840 is about 89191.4560930586. The cubic root of 7955115840 is about 1996.2526363514.

The spelling of 7955115840 in words is "seven billion, nine hundred fifty-five million, one hundred fifteen thousand, eight hundred forty".