1621074437103 has 64 divisors (see below), whose sum is σ = 2425213808640. Its totient is φ = 954834048000.

The previous prime is 1621074437069. The next prime is 1621074437159. The reversal of 1621074437103 is 3017344701261.

It is not a de Polignac number, because 1621074437103 - 2¹² = 1621074433007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621074437173) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198486726 + ... + 198494892.

It is an arithmetic number, because the mean of its divisors is an integer number (37893965760).

Almost surely, 2^{1621074437103} is an apocalyptic number.

1621074437103 is a deficient number, since it is larger than the sum of its proper divisors (804139371537).

1621074437103 is a wasteful number, since it uses less digits than its factorization.

1621074437103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9388.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 1621074437103 in words is "one trillion, six hundred twenty-one billion, seventy-four million, four hundred thirty-seven thousand, one hundred three".