1977153246763 has 2 divisors, whose sum is σ = 1977153246764. Its totient is φ = 1977153246762.

The previous prime is 1977153246701. The next prime is 1977153246829. The reversal of 1977153246763 is 3676423517791.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3676423517791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1977153246763 is a prime.

It is a super-2 number, since 2×1977153246763² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1977153246863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988576623381 + 988576623382.

It is an arithmetic number, because the mean of its divisors is an integer number (988576623382).

Almost surely, 2^{1977153246763} is an apocalyptic number.

1977153246763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1977153246763 is an equidigital number, since it uses as much as digits as its factorization.

1977153246763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40007520, while the sum is 61.

The spelling of 1977153246763 in words is "one trillion, nine hundred seventy-seven billion, one hundred fifty-three million, two hundred forty-six thousand, seven hundred sixty-three".