61451494307 has 8 divisors (see below), whose sum is σ = 70231908096. Its totient is φ = 52671487752.

The previous prime is 61451494303. The next prime is 61451494331. The reversal of 61451494307 is 70349415416.

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 61451494307 - 2² = 61451494303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61451494301) 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, 363098 + ... + 504720.

It is an arithmetic number, because the mean of its divisors is an integer number (8778988512).

Almost surely, 2^61451494307 is an apocalyptic number.

61451494307 is a deficient number, since it is larger than the sum of its proper divisors (8780413789).

61451494307 is a wasteful number, since it uses less digits than its factorization.

61451494307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203617.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 61451494307 in words is "sixty-one billion, four hundred fifty-one million, four hundred ninety-four thousand, three hundred seven".