61406607597 has 8 divisors (see below), whose sum is σ = 82348746144. Its totient is φ = 40701103728.

The previous prime is 61406607593. The next prime is 61406607611. The reversal of 61406607597 is 79570660416.

It is a happy number.

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

It is not a de Polignac number, because 61406607597 - 2² = 61406607593 is a prime.

It is a super-2 number, since 2×61406607597² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61406607593) 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, 59158063 + ... + 59159100.

It is an arithmetic number, because the mean of its divisors is an integer number (10293593268).

Almost surely, 2^61406607597 is an apocalyptic number.

It is an amenable number.

61406607597 is a deficient number, since it is larger than the sum of its proper divisors (20942138547).

61406607597 is a wasteful number, since it uses less digits than its factorization.

61406607597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118317339.

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 61406607597 in words is "sixty-one billion, four hundred six million, six hundred seven thousand, five hundred ninety-seven".