1977153246764 has 6 divisors (see below), whose sum is σ = 3460018181844. Its totient is φ = 988576623380.

The previous prime is 1977153246763. The next prime is 1977153246829. The reversal of 1977153246764 is 4676423517791.

It is a super-2 number, since 2×1977153246764² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1977153246697 and 1977153246706.

It is not an unprimeable number, because it can be changed into a prime (1977153246763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247144155842 + ... + 247144155849.

It is an arithmetic number, because the mean of its divisors is an integer number (576669696974).

Almost surely, 2^{1977153246764} is an apocalyptic number.

It is an amenable number.

1977153246764 is a deficient number, since it is larger than the sum of its proper divisors (1482864935080).

1977153246764 is a wasteful number, since it uses less digits than its factorization.

1977153246764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494288311695 (or 494288311693 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 62.

The spelling of 1977153246764 in words is "one trillion, nine hundred seventy-seven billion, one hundred fifty-three million, two hundred forty-six thousand, seven hundred sixty-four".