2100558623 has 16 divisors (see below), whose sum is σ = 2238865920. Its totient is φ = 1965148416.

The previous prime is 2100558589. The next prime is 2100558679. The reversal of 2100558623 is 3268550012.

It is not a de Polignac number, because 2100558623 - 2¹⁸ = 2100296479 is a prime.

It is a super-2 number, since 2×2100558623² = 8824693057319312258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100558623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100554623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716186 + ... + 719112.

It is an arithmetic number, because the mean of its divisors is an integer number (139929120).

Almost surely, 2^2100558623 is an apocalyptic number.

2100558623 is a deficient number, since it is larger than the sum of its proper divisors (138307297).

2100558623 is a wasteful number, since it uses less digits than its factorization.

2100558623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2100558623 is about 45831.8516208979. The cubic root of 2100558623 is about 1280.6927042816.

The spelling of 2100558623 in words is "two billion, one hundred million, five hundred fifty-eight thousand, six hundred twenty-three".