1152728421879 has 16 divisors (see below), whose sum is σ = 1617938858880. Its totient is φ = 728005520160.

The previous prime is 1152728421877. The next prime is 1152728421907. The reversal of 1152728421879 is 9781248272511.

It is not a de Polignac number, because 1152728421879 - 2¹ = 1152728421877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152728421877) 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, 815884 + ... + 1723694.

It is an arithmetic number, because the mean of its divisors is an integer number (101121178680).

Almost surely, 2^{1152728421879} is an apocalyptic number.

1152728421879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1152728421879 is a deficient number, since it is larger than the sum of its proper divisors (465210437001).

1152728421879 is a wasteful number, since it uses less digits than its factorization.

1152728421879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930110.

The product of its digits is 4515840, while the sum is 57.

The spelling of 1152728421879 in words is "one trillion, one hundred fifty-two billion, seven hundred twenty-eight million, four hundred twenty-one thousand, eight hundred seventy-nine".