38661664470 has 64 divisors (see below), whose sum is σ = 109009684224. Its totient is φ = 8651560320.

The previous prime is 38661664429. The next prime is 38661664471. The reversal of 38661664470 is 7446616683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38661664471) 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, 4501732 + ... + 4510311.

It is an arithmetic number, because the mean of its divisors is an integer number (1703276316).

Almost surely, 2^38661664470 is an apocalyptic number.

38661664470 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38661664470 is an abundant number, since it is smaller than the sum of its proper divisors (70348019754).

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

38661664470 is a wasteful number, since it uses less digits than its factorization.

38661664470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9012077.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 38661664470 in words is "thirty-eight billion, six hundred sixty-one million, six hundred sixty-four thousand, four hundred seventy".