2015646326542 has 4 divisors (see below), whose sum is σ = 3023469489816. Its totient is φ = 1007823163270.

The previous prime is 2015646326531. The next prime is 2015646326569. The reversal of 2015646326542 is 2456236465102.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2015646326542² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2015646326492 and 2015646326501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503911581634 + ... + 503911581637.

It is an arithmetic number, because the mean of its divisors is an integer number (755867372454).

Almost surely, 2^{2015646326542} is an apocalyptic number.

2015646326542 is a deficient number, since it is larger than the sum of its proper divisors (1007823163274).

2015646326542 is a wasteful number, since it uses less digits than its factorization.

2015646326542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007823163273.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 2015646326542 in words is "two trillion, fifteen billion, six hundred forty-six million, three hundred twenty-six thousand, five hundred forty-two".