102561922419 has 8 divisors (see below), whose sum is σ = 149180978112. Its totient is φ = 62158740840.

The previous prime is 102561922409. The next prime is 102561922459. The reversal of 102561922419 is 914229165201.

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

It is not a de Polignac number, because 102561922419 - 2⁷ = 102561922291 is a prime.

It is a super-2 number, since 2×102561922419² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (102561922409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1553968489 + ... + 1553968554.

It is an arithmetic number, because the mean of its divisors is an integer number (18647622264).

Almost surely, 2^102561922419 is an apocalyptic number.

102561922419 is a deficient number, since it is larger than the sum of its proper divisors (46619055693).

102561922419 is a wasteful number, since it uses less digits than its factorization.

102561922419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107937057.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 102561922419 in words is "one hundred two billion, five hundred sixty-one million, nine hundred twenty-two thousand, four hundred nineteen".