19610039412 has 60 divisors (see below), whose sum is σ = 51278081316. Its totient is φ = 6534950400.

The previous prime is 19610039411. The next prime is 19610039429. The reversal of 19610039412 is 21493001691.

It is a happy number.

19610039412 is a `hidden beast` number, since 1 + 9 + 610 + 0 + 39 + 4 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15636502116 + 3973537296 = 125046^2 + 63036^2 .

It is a super-3 number, since 3×19610039412³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19610039411) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1975662 + ... + 1985562.

Almost surely, 2^19610039412 is an apocalyptic number.

19610039412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19610039412 is an abundant number, since it is smaller than the sum of its proper divisors (31668041904).

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

19610039412 is a wasteful number, since it uses less digits than its factorization.

19610039412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16030 (or 16019 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 19610039412 in words is "nineteen billion, six hundred ten million, thirty-nine thousand, four hundred twelve".