378657777051 has 32 divisors (see below), whose sum is σ = 568064472640. Its totient is φ = 252365453280.

The previous prime is 378657777041. The next prime is 378657777059. The reversal of 378657777051 is 150777756873.

378657777051 is a `hidden beast` number, since 3 + 7 + 8 + 6 + 577 + 7 + 7 + 0 + 51 = 666.

It is not a de Polignac number, because 378657777051 - 2²³ = 378649388443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378657777051.

It is not an unprimeable number, because it can be changed into a prime (378657777059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8140881 + ... + 8187261.

It is an arithmetic number, because the mean of its divisors is an integer number (17752014770).

Almost surely, 2^378657777051 is an apocalyptic number.

378657777051 is a deficient number, since it is larger than the sum of its proper divisors (189406695589).

378657777051 is an frugal number, since it uses more digits than its factorization.

378657777051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50135 (or 50117 counting only the distinct ones).

The product of its (nonzero) digits is 60505200, while the sum is 63.

The spelling of 378657777051 in words is "three hundred seventy-eight billion, six hundred fifty-seven million, seven hundred seventy-seven thousand, fifty-one".