77773846146 has 8 divisors (see below), whose sum is σ = 155547692304. Its totient is φ = 25924615380.

The previous prime is 77773846067. The next prime is 77773846151. The reversal of 77773846146 is 64164837777.

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

77773846146 is an admirable number.

It is a super-2 number, since 2×77773846146² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77773846146.

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, 6481153840 + ... + 6481153851.

It is an arithmetic number, because the mean of its divisors is an integer number (19443461538).

Almost surely, 2^77773846146 is an apocalyptic number.

77773846146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77773846146 is a wasteful number, since it uses less digits than its factorization.

77773846146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12962307696.

The product of its digits is 33191424, while the sum is 60.

The spelling of 77773846146 in words is "seventy-seven billion, seven hundred seventy-three million, eight hundred forty-six thousand, one hundred forty-six".