38206251664140 has 48 divisors (see below), whose sum is σ = 122260005326592. Its totient is φ = 8732857523136.

The previous prime is 38206251664127. The next prime is 38206251664171. The reversal of 38206251664140 is 4146615260283.

It is a self number, because there is not a number n which added to its sum of digits gives 38206251664140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45483632514 + ... + 45483633353.

It is an arithmetic number, because the mean of its divisors is an integer number (2547083444304).

Almost surely, 2^{38206251664140} is an apocalyptic number.

38206251664140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38206251664140 is an abundant number, since it is smaller than the sum of its proper divisors (84053753662452).

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

38206251664140 is a wasteful number, since it uses less digits than its factorization.

38206251664140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90967265886 (or 90967265884 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 38206251664140 in words is "thirty-eight trillion, two hundred six billion, two hundred fifty-one million, six hundred sixty-four thousand, one hundred forty".