15420205004 has 6 divisors (see below), whose sum is σ = 26985358764. Its totient is φ = 7710102500.

The previous prime is 15420204991. The next prime is 15420205027. The reversal of 15420205004 is 40050202451.

It is a happy number.

It is a super-3 number, since 3×15420205004³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927525622 + ... + 1927525629.

It is an arithmetic number, because the mean of its divisors is an integer number (4497559794).

Almost surely, 2^15420205004 is an apocalyptic number.

It is an amenable number.

15420205004 is a deficient number, since it is larger than the sum of its proper divisors (11565153760).

15420205004 is a wasteful number, since it uses less digits than its factorization.

15420205004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855051255 (or 3855051253 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 15420205004 its reverse (40050202451), we get a palindrome (55470407455).

The spelling of 15420205004 in words is "fifteen billion, four hundred twenty million, two hundred five thousand, four".