61253628451 has 4 divisors (see below), whose sum is σ = 63916829712. Its totient is φ = 58590427192.

The previous prime is 61253628329. The next prime is 61253628479. The reversal of 61253628451 is 15482635216.

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

It is a cyclic number.

It is not a de Polignac number, because 61253628451 - 2⁷ = 61253628323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61253628398 and 61253628407.

It is not an unprimeable number, because it can be changed into a prime (61253628151) 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, 1331600596 + ... + 1331600641.

It is an arithmetic number, because the mean of its divisors is an integer number (15979207428).

Almost surely, 2^61253628451 is an apocalyptic number.

61253628451 is a deficient number, since it is larger than the sum of its proper divisors (2663201261).

61253628451 is a wasteful number, since it uses less digits than its factorization.

61253628451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663201260.

The product of its digits is 345600, while the sum is 43.

The spelling of 61253628451 in words is "sixty-one billion, two hundred fifty-three million, six hundred twenty-eight thousand, four hundred fifty-one".