61401531043 has 8 divisors (see below), whose sum is σ = 63092188880. Its totient is φ = 59712513120.

The previous prime is 61401530989. The next prime is 61401531119. The reversal of 61401531043 is 34013510416.

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

It is a cyclic number.

It is not a de Polignac number, because 61401531043 - 2¹⁷ = 61401399971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61408531043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333873 + ... + 484018.

It is an arithmetic number, because the mean of its divisors is an integer number (7886523610).

Almost surely, 2^61401531043 is an apocalyptic number.

61401531043 is a deficient number, since it is larger than the sum of its proper divisors (1690657837).

61401531043 is a wasteful number, since it uses less digits than its factorization.

61401531043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819957.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 61401531043 in words is "sixty-one billion, four hundred one million, five hundred thirty-one thousand, forty-three".