38153878515851 has 16 divisors (see below), whose sum is σ = 43833723678720. Its totient is φ = 32531363905920.

The previous prime is 38153878515817. The next prime is 38153878515871. The reversal of 38153878515851 is 15851587835183.

It is a cyclic number.

It is not a de Polignac number, because 38153878515851 - 2¹⁸ = 38153878253707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38153878515811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63216515 + ... + 63817203.

It is an arithmetic number, because the mean of its divisors is an integer number (2739607729920).

Almost surely, 2^{38153878515851} is an apocalyptic number.

38153878515851 is a deficient number, since it is larger than the sum of its proper divisors (5679845162869).

38153878515851 is a wasteful number, since it uses less digits than its factorization.

38153878515851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648394.

The product of its digits is 161280000, while the sum is 68.

The spelling of 38153878515851 in words is "thirty-eight trillion, one hundred fifty-three billion, eight hundred seventy-eight million, five hundred fifteen thousand, eight hundred fifty-one".