38777487490 has 64 divisors (see below), whose sum is σ = 81052418304. Its totient is φ = 13081989888.

The previous prime is 38777487487. The next prime is 38777487493. The reversal of 38777487490 is 9478477783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38777487487) and next prime (38777487493).

It is not an unprimeable number, because it can be changed into a prime (38777487493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4671784 + ... + 4680076.

It is an arithmetic number, because the mean of its divisors is an integer number (1266444036).

Almost surely, 2^38777487490 is an apocalyptic number.

38777487490 is an abundant number, since it is smaller than the sum of its proper divisors (42274930814).

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

38777487490 is a wasteful number, since it uses less digits than its factorization.

38777487490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371.

The product of its (nonzero) digits is 66382848, while the sum is 64.

The spelling of 38777487490 in words is "thirty-eight billion, seven hundred seventy-seven million, four hundred eighty-seven thousand, four hundred ninety".