1251913028755 has 16 divisors (see below), whose sum is σ = 1512871200000. Its totient is φ = 994500223200.

The previous prime is 1251913028753. The next prime is 1251913028759. The reversal of 1251913028755 is 5578203191521.

It is not a de Polignac number, because 1251913028755 - 2¹ = 1251913028753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1251913028699 and 1251913028708.

It is not an unprimeable number, because it can be changed into a prime (1251913028753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764221 + ... + 1757230.

It is an arithmetic number, because the mean of its divisors is an integer number (94554450000).

Almost surely, 2^{1251913028755} is an apocalyptic number.

1251913028755 is a deficient number, since it is larger than the sum of its proper divisors (260958171245).

1251913028755 is a wasteful number, since it uses less digits than its factorization.

1251913028755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522154.

The product of its (nonzero) digits is 756000, while the sum is 49.

The spelling of 1251913028755 in words is "one trillion, two hundred fifty-one billion, nine hundred thirteen million, twenty-eight thousand, seven hundred fifty-five".