16409688542 has 64 divisors (see below), whose sum is σ = 28516024320. Its totient is φ = 7019115264.

The previous prime is 16409688527. The next prime is 16409688557. The reversal of 16409688542 is 24588690461.

It is an interprime number because it is at equal distance from previous prime (16409688527) and next prime (16409688557).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4578083 + ... + 4581665.

It is an arithmetic number, because the mean of its divisors is an integer number (445562880).

Almost surely, 2^16409688542 is an apocalyptic number.

16409688542 is a deficient number, since it is larger than the sum of its proper divisors (12106335778).

16409688542 is a wasteful number, since it uses less digits than its factorization.

16409688542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 16409688542 in words is "sixteen billion, four hundred nine million, six hundred eighty-eight thousand, five hundred forty-two".