61889149047 has 8 divisors (see below), whose sum is σ = 90020580480. Its totient is φ = 37508575160.

The previous prime is 61889149037. The next prime is 61889149061. The reversal of 61889149047 is 74094198816.

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 61889149047 - 2⁴ = 61889149031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61889149037) 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, 937714347 + ... + 937714412.

It is an arithmetic number, because the mean of its divisors is an integer number (11252572560).

Almost surely, 2^61889149047 is an apocalyptic number.

61889149047 is a deficient number, since it is larger than the sum of its proper divisors (28131431433).

61889149047 is a wasteful number, since it uses less digits than its factorization.

61889149047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875428773.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 61889149047 in words is "sixty-one billion, eight hundred eighty-nine million, one hundred forty-nine thousand, forty-seven".