38778581370 has 16 divisors (see below), whose sum is σ = 93068595360. Its totient is φ = 10340955024.

The previous prime is 38778581329. The next prime is 38778581383. The reversal of 38778581370 is 7318587783.

It is a happy number.

It is a super-2 number, since 2×38778581370² (a number of 22 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 38778581370.

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, 646309660 + ... + 646309719.

It is an arithmetic number, because the mean of its divisors is an integer number (5816787210).

Almost surely, 2^38778581370 is an apocalyptic number.

38778581370 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38778581370 is an abundant number, since it is smaller than the sum of its proper divisors (54290013990).

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

38778581370 is a wasteful number, since it uses less digits than its factorization.

38778581370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292619389.

The product of its (nonzero) digits is 7902720, while the sum is 57.

The spelling of 38778581370 in words is "thirty-eight billion, seven hundred seventy-eight million, five hundred eighty-one thousand, three hundred seventy".