1261640603022 has 8 divisors (see below), whose sum is σ = 2523281206056. Its totient is φ = 420546867672.

The previous prime is 1261640602993. The next prime is 1261640603029. The reversal of 1261640603022 is 2203060461621.

It is a sphenic number, since it is the product of 3 distinct primes.

1261640603022 is an admirable number.

It is a super-2 number, since 2×1261640603022² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261640603029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105136716913 + ... + 105136716924.

It is an arithmetic number, because the mean of its divisors is an integer number (315410150757).

Almost surely, 2^{1261640603022} is an apocalyptic number.

1261640603022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1261640603022 is a wasteful number, since it uses less digits than its factorization.

1261640603022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210273433842.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 1261640603022 in words is "one trillion, two hundred sixty-one billion, six hundred forty million, six hundred three thousand, twenty-two".