151878891903 has 16 divisors (see below), whose sum is σ = 203307895296. Its totient is φ = 100851366560.

The previous prime is 151878891877. The next prime is 151878891943. The reversal of 151878891903 is 309198878151.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 151878891903 - 2¹⁶ = 151878826367 is a prime.

It is a super-2 number, since 2×151878891903² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151878891943) 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, 6771838 + ... + 6794228.

It is an arithmetic number, because the mean of its divisors is an integer number (12706743456).

Almost surely, 2^151878891903 is an apocalyptic number.

151878891903 is a deficient number, since it is larger than the sum of its proper divisors (51429003393).

151878891903 is a wasteful number, since it uses less digits than its factorization.

151878891903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31254.

The product of its (nonzero) digits is 4354560, while the sum is 60.

The spelling of 151878891903 in words is "one hundred fifty-one billion, eight hundred seventy-eight million, eight hundred ninety-one thousand, nine hundred three".