1087187400156 has 144 divisors (see below), whose sum is σ = 3030909259392. Its totient is φ = 301265669760.

The previous prime is 1087187400127. The next prime is 1087187400157. The reversal of 1087187400156 is 6510047817801.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087187400157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1750591 + ... + 2288873.

It is an arithmetic number, because the mean of its divisors is an integer number (21047980968).

Almost surely, 2^{1087187400156} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1087187400156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515454629696).

1087187400156 is an abundant number, since it is smaller than the sum of its proper divisors (1943721859236).

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

1087187400156 is a wasteful number, since it uses less digits than its factorization.

1087187400156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538432 (or 538419 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 48.

The spelling of 1087187400156 in words is "one trillion, eighty-seven billion, one hundred eighty-seven million, four hundred thousand, one hundred fifty-six".