61826140312 has 8 divisors (see below), whose sum is σ = 115924013100. Its totient is φ = 30913070152.

The previous prime is 61826140291. The next prime is 61826140319. The reversal of 61826140312 is 21304162816.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×61826140312² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61826140319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3864133762 + ... + 3864133777.

Almost surely, 2^61826140312 is an apocalyptic number.

It is an amenable number.

61826140312 is a deficient number, since it is larger than the sum of its proper divisors (54097872788).

61826140312 is a wasteful number, since it uses less digits than its factorization.

61826140312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7728267545 (or 7728267541 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 61826140312 in words is "sixty-one billion, eight hundred twenty-six million, one hundred forty thousand, three hundred twelve".