1087187400155 has 32 divisors (see below), whose sum is σ = 1366985108160. Its totient is φ = 829007872000.

The previous prime is 1087187400127. The next prime is 1087187400157. The reversal of 1087187400155 is 5510047817801.

It is not a de Polignac number, because 1087187400155 - 2¹⁴ = 1087187383771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1087187400157) 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, 3980459 + ... + 4244811.

It is an arithmetic number, because the mean of its divisors is an integer number (42718284630).

Almost surely, 2^{1087187400155} is an apocalyptic number.

1087187400155 is a deficient number, since it is larger than the sum of its proper divisors (279797708005).

1087187400155 is a wasteful number, since it uses less digits than its factorization.

1087187400155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264751.

The product of its (nonzero) digits is 313600, while the sum is 47.

The spelling of 1087187400155 in words is "one trillion, eighty-seven billion, one hundred eighty-seven million, four hundred thousand, one hundred fifty-five".