61254653501 has 4 divisors (see below), whose sum is σ = 61255655904. Its totient is φ = 61253651100.

The previous prime is 61254653491. The next prime is 61254653531. The reversal of 61254653501 is 10535645216.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61254653501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61254653531) 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, 403145 + ... + 533886.

It is an arithmetic number, because the mean of its divisors is an integer number (15313913976).

Almost surely, 2^61254653501 is an apocalyptic number.

It is an amenable number.

61254653501 is a deficient number, since it is larger than the sum of its proper divisors (1002403).

61254653501 is an equidigital number, since it uses as much as digits as its factorization.

61254653501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002402.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 61254653501 in words is "sixty-one billion, two hundred fifty-four million, six hundred fifty-three thousand, five hundred one".