1961385713595 has 96 divisors (see below), whose sum is σ = 4318605517824. Its totient is φ = 799741612800.

The previous prime is 1961385713591. The next prime is 1961385713597. The reversal of 1961385713595 is 5953175831691.

1961385713595 is a `hidden beast` number, since 1 + 9 + 6 + 1 + 3 + 8 + 571 + 3 + 59 + 5 = 666.

It is not a de Polignac number, because 1961385713595 - 2² = 1961385713591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1961385713591) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5156511 + ... + 5523800.

It is an arithmetic number, because the mean of its divisors is an integer number (44985474144).

Almost surely, 2^{1961385713595} is an apocalyptic number.

1961385713595 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1961385713595 is an abundant number, since it is smaller than the sum of its proper divisors (2357219804229).

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

1961385713595 is a wasteful number, since it uses less digits than its factorization.

1961385713595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680393 (or 10680390 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 63.

The spelling of 1961385713595 in words is "one trillion, nine hundred sixty-one billion, three hundred eighty-five million, seven hundred thirteen thousand, five hundred ninety-five".