1915166296550 has 144 divisors (see below), whose sum is σ = 4055791627008. Its totient is φ = 671220950400.

The previous prime is 1915166296529. The next prime is 1915166296553. The reversal of 1915166296550 is 556926615191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915166296553) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 25422239 + ... + 25497461.

It is an arithmetic number, because the mean of its divisors is an integer number (28165219632).

Almost surely, 2^{1915166296550} is an apocalyptic number.

1915166296550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1915166296550 is an abundant number, since it is smaller than the sum of its proper divisors (2140625330458).

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

1915166296550 is a wasteful number, since it uses less digits than its factorization.

1915166296550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75415 (or 75397 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 56.

The spelling of 1915166296550 in words is "one trillion, nine hundred fifteen billion, one hundred sixty-six million, two hundred ninety-six thousand, five hundred fifty".