1055211433515 has 192 divisors, whose sum is σ = 2021713182720. Its totient is φ = 522042071040.

The previous prime is 1055211433499. The next prime is 1055211433543. The reversal of 1055211433515 is 5153341125501.

1055211433515 is a `hidden beast` number, since 1 + 0 + 5 + 5 + 211 + 433 + 5 + 1 + 5 = 666.

It is not a de Polignac number, because 1055211433515 - 2⁴ = 1055211433499 is a prime.

It is a super-2 number, since 2×1055211433515² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055211433515.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 857197950 + ... + 857199180.

It is an arithmetic number, because the mean of its divisors is an integer number (10529756160).

Almost surely, 2^{1055211433515} is an apocalyptic number.

1055211433515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1055211433515 is a deficient number, since it is larger than the sum of its proper divisors (966501749205).

1055211433515 is a wasteful number, since it uses less digits than its factorization.

1055211433515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 1055211433515 in words is "one trillion, fifty-five billion, two hundred eleven million, four hundred thirty-three thousand, five hundred fifteen".