61042050407 has 4 divisors (see below), whose sum is σ = 65737592760. Its totient is φ = 56346508056.

The previous prime is 61042050343. The next prime is 61042050409. The reversal of 61042050407 is 70405024016.

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

It is a cyclic number.

It is not a de Polignac number, because 61042050407 - 2⁶ = 61042050343 is a prime.

It is a super-2 number, since 2×61042050407² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61042050407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61042050409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2347771157 + ... + 2347771182.

It is an arithmetic number, because the mean of its divisors is an integer number (16434398190).

Almost surely, 2^61042050407 is an apocalyptic number.

61042050407 is a deficient number, since it is larger than the sum of its proper divisors (4695542353).

61042050407 is a wasteful number, since it uses less digits than its factorization.

61042050407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4695542352.

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 61042050407 in words is "sixty-one billion, forty-two million, fifty thousand, four hundred seven".