1915431542055 has 32 divisors (see below), whose sum is σ = 3437036064000. Its totient is φ = 1012016159136.

The previous prime is 1915431542041. The next prime is 1915431542071. The reversal of 1915431542055 is 5502451345191.

1915431542055 is a `hidden beast` number, since 1 + 9 + 1 + 5 + 431 + 5 + 4 + 205 + 5 = 666.

It is not a de Polignac number, because 1915431542055 - 2⁴ = 1915431542039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1915431542055.

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, 66286405 + ... + 66315294.

It is an arithmetic number, because the mean of its divisors is an integer number (107407377000).

Almost surely, 2^{1915431542055} is an apocalyptic number.

1915431542055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1915431542055 is a deficient number, since it is larger than the sum of its proper divisors (1521604521945).

1915431542055 is a wasteful number, since it uses less digits than its factorization.

1915431542055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132601820 (or 132601814 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 1915431542055 in words is "one trillion, nine hundred fifteen billion, four hundred thirty-one million, five hundred forty-two thousand, fifty-five".