61043615254 has 4 divisors (see below), whose sum is σ = 91565422884. Its totient is φ = 30521807626.

The previous prime is 61043615251. The next prime is 61043615287. The reversal of 61043615254 is 45251634016.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61043615251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15260903812 + ... + 15260903815.

It is an arithmetic number, because the mean of its divisors is an integer number (22891355721).

Almost surely, 2^61043615254 is an apocalyptic number.

61043615254 is a deficient number, since it is larger than the sum of its proper divisors (30521807630).

61043615254 is a wasteful number, since it uses less digits than its factorization.

61043615254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30521807629.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 61043615254 in words is "sixty-one billion, forty-three million, six hundred fifteen thousand, two hundred fifty-four".