1553496079977 has 8 divisors (see below), whose sum is σ = 2301475674080. Its totient is φ = 1035664053300.

The previous prime is 1553496079973. The next prime is 1553496079981. The reversal of 1553496079977 is 7799706943551.

1553496079977 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 4 + 9 + 607 + 9 + 9 + 7 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (1553496079973) and next prime (1553496079981).

It is not a de Polignac number, because 1553496079977 - 2² = 1553496079973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1553496079973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28768445899 + ... + 28768445952.

It is an arithmetic number, because the mean of its divisors is an integer number (287684459260).

Almost surely, 2^{1553496079977} is an apocalyptic number.

It is an amenable number.

1553496079977 is a deficient number, since it is larger than the sum of its proper divisors (747979594103).

1553496079977 is an equidigital number, since it uses as much as digits as its factorization.

1553496079977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57536891860 (or 57536891854 counting only the distinct ones).

The product of its (nonzero) digits is 450084600, while the sum is 72.

It can be divided in two parts, 155349 and 6079977, that added together give a palindrome (6235326).

The spelling of 1553496079977 in words is "one trillion, five hundred fifty-three billion, four hundred ninety-six million, seventy-nine thousand, nine hundred seventy-seven".