2015421538622 has 4 divisors (see below), whose sum is σ = 3023132307936. Its totient is φ = 1007710769310.

The previous prime is 2015421538621. The next prime is 2015421538643. The reversal of 2015421538622 is 2268351245102.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2015421538622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015421538621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503855384654 + ... + 503855384657.

It is an arithmetic number, because the mean of its divisors is an integer number (755783076984).

Almost surely, 2^{2015421538622} is an apocalyptic number.

2015421538622 is a deficient number, since it is larger than the sum of its proper divisors (1007710769314).

2015421538622 is a wasteful number, since it uses less digits than its factorization.

2015421538622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007710769313.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 2015421538622 in words is "two trillion, fifteen billion, four hundred twenty-one million, five hundred thirty-eight thousand, six hundred twenty-two".