1255516415034 has 64 divisors (see below), whose sum is σ = 2948169664512. Its totient is φ = 348922382400.

The previous prime is 1255516415033. The next prime is 1255516415053. The reversal of 1255516415034 is 4305146155521.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1255516415033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5309299 + ... + 5540729.

It is an arithmetic number, because the mean of its divisors is an integer number (46065151008).

Almost surely, 2^{1255516415034} is an apocalyptic number.

1255516415034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255516415034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474084832256).

1255516415034 is an abundant number, since it is smaller than the sum of its proper divisors (1692653249478).

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

1255516415034 is a wasteful number, since it uses less digits than its factorization.

1255516415034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234971.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 1255516415034 in words is "one trillion, two hundred fifty-five billion, five hundred sixteen million, four hundred fifteen thousand, thirty-four".