1552572979991 has 16 divisors (see below), whose sum is σ = 1695641195520. Its totient is φ = 1409826244320.

The previous prime is 1552572979987. The next prime is 1552572980029. The reversal of 1552572979991 is 1999792752551.

It is a cyclic number.

It is not a de Polignac number, because 1552572979991 - 2² = 1552572979987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552572979901) 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, 64402046 + ... + 64426148.

It is an arithmetic number, because the mean of its divisors is an integer number (105977574720).

Almost surely, 2^{1552572979991} is an apocalyptic number.

1552572979991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1552572979991 is a deficient number, since it is larger than the sum of its proper divisors (143068215529).

1552572979991 is a wasteful number, since it uses less digits than its factorization.

1552572979991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30526.

The product of its digits is 160744500, while the sum is 71.

The spelling of 1552572979991 in words is "one trillion, five hundred fifty-two billion, five hundred seventy-two million, nine hundred seventy-nine thousand, nine hundred ninety-one".