61790407893 has 24 divisors (see below), whose sum is σ = 89960682240. Its totient is φ = 40867082880.

The previous prime is 61790407873. The next prime is 61790407949. The reversal of 61790407893 is 39870409716.

It is a happy number.

61790407893 is a `hidden beast` number, since 61 + 7 + 90 + 407 + 8 + 93 = 666.

It is not a de Polignac number, because 61790407893 - 2⁹ = 61790407381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61790407823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5900380 + ... + 5910842.

It is an arithmetic number, because the mean of its divisors is an integer number (3748361760).

Almost surely, 2^61790407893 is an apocalyptic number.

It is an amenable number.

61790407893 is a deficient number, since it is larger than the sum of its proper divisors (28170274347).

61790407893 is a wasteful number, since it uses less digits than its factorization.

61790407893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15609 (or 15606 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 61790407893 in words is "sixty-one billion, seven hundred ninety million, four hundred seven thousand, eight hundred ninety-three".