61123451426 has 4 divisors (see below), whose sum is σ = 91685177142. Its totient is φ = 30561725712.

The previous prime is 61123451423. The next prime is 61123451429. The reversal of 61123451426 is 62415432116.

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

It is an interprime number because it is at equal distance from previous prime (61123451423) and next prime (61123451429).

It can be written as a sum of positive squares in only one way, i.e., 56810245801 + 4313205625 = 238349^2 + 65675^2 .

It is not an unprimeable number, because it can be changed into a prime (61123451423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15280862855 + ... + 15280862858.

Almost surely, 2^61123451426 is an apocalyptic number.

61123451426 is a deficient number, since it is larger than the sum of its proper divisors (30561725716).

61123451426 is a wasteful number, since it uses less digits than its factorization.

61123451426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30561725715.

The product of its digits is 34560, while the sum is 35.

The spelling of 61123451426 in words is "sixty-one billion, one hundred twenty-three million, four hundred fifty-one thousand, four hundred twenty-six".