61237925549 has 8 divisors (see below), whose sum is σ = 61608270528. Its totient is φ = 60868584000.

The previous prime is 61237925537. The next prime is 61237925591. The reversal of 61237925549 is 94552973216.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61237925549 - 2⁴ = 61237925533 is a prime.

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 61237925549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61237925599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128252 + ... + 372725.

It is an arithmetic number, because the mean of its divisors is an integer number (7701033816).

Almost surely, 2^61237925549 is an apocalyptic number.

It is an amenable number.

61237925549 is a deficient number, since it is larger than the sum of its proper divisors (370344979).

61237925549 is a wasteful number, since it uses less digits than its factorization.

61237925549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501715.

The product of its digits is 4082400, while the sum is 53.

The spelling of 61237925549 in words is "sixty-one billion, two hundred thirty-seven million, nine hundred twenty-five thousand, five hundred forty-nine".