1025979743655 has 32 divisors (see below), whose sum is σ = 1841672401920. Its totient is φ = 541876672800.

The previous prime is 1025979743539. The next prime is 1025979743669. The reversal of 1025979743655 is 5563479795201.

1025979743655 is a `hidden beast` number, since 1 + 0 + 2 + 597 + 9 + 7 + 4 + 36 + 5 + 5 = 666.

It is not a de Polignac number, because 1025979743655 - 2⁷ = 1025979743527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1025979743592 and 1025979743601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36878571 + ... + 36906380.

It is an arithmetic number, because the mean of its divisors is an integer number (57552262560).

Almost surely, 2^{1025979743655} is an apocalyptic number.

1025979743655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1025979743655 is a deficient number, since it is larger than the sum of its proper divisors (815692658265).

1025979743655 is a wasteful number, since it uses less digits than its factorization.

1025979743655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73785068 (or 73785062 counting only the distinct ones).

The product of its (nonzero) digits is 71442000, while the sum is 63.

The spelling of 1025979743655 in words is "one trillion, twenty-five billion, nine hundred seventy-nine million, seven hundred forty-three thousand, six hundred fifty-five".