1977153246319 has 2 divisors, whose sum is σ = 1977153246320. Its totient is φ = 1977153246318.

The previous prime is 1977153246311. The next prime is 1977153246323. The reversal of 1977153246319 is 9136423517791.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9136423517791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1977153246319 - 2³ = 1977153246311 is a prime.

It is a super-2 number, since 2×1977153246319² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1977153246311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988576623159 + 988576623160.

It is an arithmetic number, because the mean of its divisors is an integer number (988576623160).

Almost surely, 2^{1977153246319} is an apocalyptic number.

1977153246319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1977153246319 is an equidigital number, since it uses as much as digits as its factorization.

1977153246319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 58.

The spelling of 1977153246319 in words is "one trillion, nine hundred seventy-seven billion, one hundred fifty-three million, two hundred forty-six thousand, three hundred nineteen".