7977117054 has 32 divisors (see below), whose sum is σ = 16816181760. Its totient is φ = 2515752000.

The previous prime is 7977117053. The next prime is 7977117089. The reversal of 7977117054 is 4507117797.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7977116994 and 7977117012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7977117053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40779 + ... + 132729.

It is an arithmetic number, because the mean of its divisors is an integer number (525505680).

Almost surely, 2^7977117054 is an apocalyptic number.

7977117054 is an abundant number, since it is smaller than the sum of its proper divisors (8839064706).

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

7977117054 is a wasteful number, since it uses less digits than its factorization.

7977117054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92736.

The product of its (nonzero) digits is 432180, while the sum is 48.

The square root of 7977117054 is about 89314.7079377187. The cubic root of 7977117054 is about 1998.0912667816.

The spelling of 7977117054 in words is "seven billion, nine hundred seventy-seven million, one hundred seventeen thousand, fifty-four".