61357445007 has 16 divisors (see below), whose sum is σ = 87388852320. Its totient is φ = 38158088192.

The previous prime is 61357444957. The next prime is 61357445011. The reversal of 61357445007 is 70054475316.

It is a happy number.

61357445007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61357445007 - 2⁶ = 61357444943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61357445007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61357445087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5317632 + ... + 5329157.

It is an arithmetic number, because the mean of its divisors is an integer number (5461803270).

Almost surely, 2^61357445007 is an apocalyptic number.

61357445007 is a deficient number, since it is larger than the sum of its proper divisors (26031407313).

61357445007 is a wasteful number, since it uses less digits than its factorization.

61357445007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10646922.

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 61357445007 in words is "sixty-one billion, three hundred fifty-seven million, four hundred forty-five thousand, seven".