61015290983 has 4 divisors (see below), whose sum is σ = 62983526208. Its totient is φ = 59047055760.

The previous prime is 61015290977. The next prime is 61015291031. The reversal of 61015290983 is 38909251016.

It is a happy number.

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 61015290983 - 2¹⁸ = 61015028839 is a prime.

It is a super-2 number, since 2×61015290983² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61015220983) 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, 984117566 + ... + 984117627.

It is an arithmetic number, because the mean of its divisors is an integer number (15745881552).

Almost surely, 2^61015290983 is an apocalyptic number.

61015290983 is a deficient number, since it is larger than the sum of its proper divisors (1968235225).

61015290983 is a wasteful number, since it uses less digits than its factorization.

61015290983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968235224.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 61015290983 in words is "sixty-one billion, fifteen million, two hundred ninety thousand, nine hundred eighty-three".