1385920250955 has 40 divisors (see below), whose sum is σ = 2526498730800. Its totient is φ = 726629361984.

The previous prime is 1385920250933. The next prime is 1385920250969. The reversal of 1385920250955 is 5590520295831.

1385920250955 is a `hidden beast` number, since 1 + 3 + 85 + 9 + 2 + 0 + 2 + 509 + 55 = 666.

It is not a de Polignac number, because 1385920250955 - 2²⁰ = 1385919202379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28976320 + ... + 29024109.

It is an arithmetic number, because the mean of its divisors is an integer number (63162468270).

Almost surely, 2^{1385920250955} is an apocalyptic number.

1385920250955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1385920250955 is a deficient number, since it is larger than the sum of its proper divisors (1140578479845).

1385920250955 is an equidigital number, since it uses as much as digits as its factorization.

1385920250955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58000505 (or 58000496 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 1385920250955 in words is "one trillion, three hundred eighty-five billion, nine hundred twenty million, two hundred fifty thousand, nine hundred fifty-five".