1361025100080 has 80 divisors (see below), whose sum is σ = 4687975352160. Its totient is φ = 362940026112.

The previous prime is 1361025100067. The next prime is 1361025100081. The reversal of 1361025100080 is 800015201631.

1361025100080 is a `hidden beast` number, since 13 + 61 + 0 + 2 + 510 + 0 + 0 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1361025100081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315049947 + ... + 315054266.

It is an arithmetic number, because the mean of its divisors is an integer number (58599691902).

Almost surely, 2^{1361025100080} is an apocalyptic number.

1361025100080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361025100080 is an abundant number, since it is smaller than the sum of its proper divisors (3326950252080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361025100080 is a wasteful number, since it uses less digits than its factorization.

1361025100080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630104235 (or 630104223 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 1361025100080 in words is "one trillion, three hundred sixty-one billion, twenty-five million, one hundred thousand, eighty".