74621213453 has 4 divisors (see below), whose sum is σ = 78548645760. Its totient is φ = 70693781148.

The previous prime is 74621213399. The next prime is 74621213479. The reversal of 74621213453 is 35431212647.

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: 35431212647 = 48649 ⋅728303.

It is a cyclic number.

It is not a de Polignac number, because 74621213453 - 2⁶ = 74621213389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74621210453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963716125 + ... + 1963716162.

It is an arithmetic number, because the mean of its divisors is an integer number (19637161440).

Almost surely, 2^74621213453 is an apocalyptic number.

It is an amenable number.

74621213453 is a deficient number, since it is larger than the sum of its proper divisors (3927432307).

74621213453 is a wasteful number, since it uses less digits than its factorization.

74621213453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927432306.

The product of its digits is 120960, while the sum is 38.

The spelling of 74621213453 in words is "seventy-four billion, six hundred twenty-one million, two hundred thirteen thousand, four hundred fifty-three".