77947079254 has 8 divisors (see below), whose sum is σ = 127549766088. Its totient is φ = 35430490560.

The previous prime is 77947079233. The next prime is 77947079263. The reversal of 77947079254 is 45297074977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 77947079192 and 77947079201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1771524507 + ... + 1771524550.

It is an arithmetic number, because the mean of its divisors is an integer number (15943720761).

Almost surely, 2^77947079254 is an apocalyptic number.

77947079254 is a deficient number, since it is larger than the sum of its proper divisors (49602686834).

77947079254 is a wasteful number, since it uses less digits than its factorization.

77947079254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543049070.

The product of its (nonzero) digits is 31116960, while the sum is 61.

The spelling of 77947079254 in words is "seventy-seven billion, nine hundred forty-seven million, seventy-nine thousand, two hundred fifty-four".