15698769940 has 72 divisors (see below), whose sum is σ = 38387617632. Its totient is φ = 5377135680.

The previous prime is 15698769937. The next prime is 15698769941. The reversal of 15698769940 is 4996789651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15698769941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061839 + ... + 1076521.

It is an arithmetic number, because the mean of its divisors is an integer number (533161356).

Almost surely, 2^15698769940 is an apocalyptic number.

15698769940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15698769940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19193808816).

15698769940 is an abundant number, since it is smaller than the sum of its proper divisors (22688847692).

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

15698769940 is a wasteful number, since it uses less digits than its factorization.

15698769940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15797 (or 15788 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 64.

The spelling of 15698769940 in words is "fifteen billion, six hundred ninety-eight million, seven hundred sixty-nine thousand, nine hundred forty".