38780777478 has 16 divisors (see below), whose sum is σ = 79365312576. Its totient is φ = 12626299560.

The previous prime is 38780777447. The next prime is 38780777501. The reversal of 38780777478 is 87477708783.

It is a super-3 number, since 3×38780777478³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75156288 + ... + 75156803.

It is an arithmetic number, because the mean of its divisors is an integer number (4960332036).

Almost surely, 2^38780777478 is an apocalyptic number.

38780777478 is an abundant number, since it is smaller than the sum of its proper divisors (40584535098).

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

38780777478 is a wasteful number, since it uses less digits than its factorization.

38780777478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150313139.

The product of its (nonzero) digits is 103262208, while the sum is 66.

The spelling of 38780777478 in words is "thirty-eight billion, seven hundred eighty million, seven hundred seventy-seven thousand, four hundred seventy-eight".