15402002494 has 8 divisors (see below), whose sum is σ = 23103536400. Its totient is φ = 7700823696.

The previous prime is 15402002479. The next prime is 15402002501. The reversal of 15402002494 is 49420020451.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99607 + ... + 201805.

It is an arithmetic number, because the mean of its divisors is an integer number (2887942050).

Almost surely, 2^15402002494 is an apocalyptic number.

15402002494 is a deficient number, since it is larger than the sum of its proper divisors (7701533906).

15402002494 is a wasteful number, since it uses less digits than its factorization.

15402002494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177554.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 15402002494 in words is "fifteen billion, four hundred two million, two thousand, four hundred ninety-four".