98734522621 has 4 divisors (see below), whose sum is σ = 112839454432. Its totient is φ = 84629590812.

The previous prime is 98734522603. The next prime is 98734522643. The reversal of 98734522621 is 12622543789.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12622543789 = 69481 ⋅181669.

It is a cyclic number.

It is not a de Polignac number, because 98734522621 - 2⁷ = 98734522493 is a prime.

It is the 314221-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98734523621) by changing a digit.

It is a nontrivial repunit in base 314220.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7052465895 + ... + 7052465908.

It is an arithmetic number, because the mean of its divisors is an integer number (28209863608).

Almost surely, 2^98734522621 is an apocalyptic number.

It is an amenable number.

98734522621 is a deficient number, since it is larger than the sum of its proper divisors (14104931811).

98734522621 is a wasteful number, since it uses less digits than its factorization.

98734522621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104931810.

The product of its digits is 1451520, while the sum is 49.

The spelling of 98734522621 in words is "ninety-eight billion, seven hundred thirty-four million, five hundred twenty-two thousand, six hundred twenty-one".