61427823154 has 8 divisors (see below), whose sum is σ = 97561836828. Its totient is φ = 28907210880.

The previous prime is 61427823151. The next prime is 61427823181. The reversal of 61427823154 is 45132872416.

It can be written as a sum of positive squares in 2 ways, for example, as 53672378929 + 7755444225 = 231673^2 + 88065^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61427823154.

It is not an unprimeable number, because it can be changed into a prime (61427823151) 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, 903350307 + ... + 903350374.

Almost surely, 2^61427823154 is an apocalyptic number.

61427823154 is a deficient number, since it is larger than the sum of its proper divisors (36134013674).

61427823154 is a wasteful number, since it uses less digits than its factorization.

61427823154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806700700.

The product of its digits is 322560, while the sum is 43.

The spelling of 61427823154 in words is "sixty-one billion, four hundred twenty-seven million, eight hundred twenty-three thousand, one hundred fifty-four".