187126465980 has 96 divisors (see below), whose sum is σ = 530048655360. Its totient is φ = 49322891520.

The previous prime is 187126465957. The next prime is 187126465991. The reversal of 187126465980 is 89564621781.

It is a self number, because there is not a number n which added to its sum of digits gives 187126465980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2004135 + ... + 2095425.

It is an arithmetic number, because the mean of its divisors is an integer number (5521340160).

Almost surely, 2^187126465980 is an apocalyptic number.

187126465980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187126465980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265024327680).

187126465980 is an abundant number, since it is smaller than the sum of its proper divisors (342922189380).

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

187126465980 is a wasteful number, since it uses less digits than its factorization.

187126465980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91699 (or 91697 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 187126465980 in words is "one hundred eighty-seven billion, one hundred twenty-six million, four hundred sixty-five thousand, nine hundred eighty".