61451070706 has 4 divisors (see below), whose sum is σ = 92176606062. Its totient is φ = 30725535352.

The previous prime is 61451070691. The next prime is 61451070749. The reversal of 61451070706 is 60707015416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53349450625 + 8101620081 = 230975^2 + 90009^2 .

It is a super-2 number, since 2×61451070706² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15362767675 + ... + 15362767678.

Almost surely, 2^61451070706 is an apocalyptic number.

61451070706 is a deficient number, since it is larger than the sum of its proper divisors (30725535356).

61451070706 is a wasteful number, since it uses less digits than its factorization.

61451070706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30725535355.

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 61451070706 in words is "sixty-one billion, four hundred fifty-one million, seventy thousand, seven hundred six".