140051535779 has 4 divisors (see below), whose sum is σ = 140055155040. Its totient is φ = 140047916520.

The previous prime is 140051535773. The next prime is 140051535781. The reversal of 140051535779 is 977535150041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977535150041 = 4007 ⋅243956863.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140051535779 is a prime.

It is a super-2 number, since 2×140051535779² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140051535773) 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, 1750952 + ... + 1829189.

It is an arithmetic number, because the mean of its divisors is an integer number (35013788760).

Almost surely, 2^140051535779 is an apocalyptic number.

140051535779 is a deficient number, since it is larger than the sum of its proper divisors (3619261).

140051535779 is an equidigital number, since it uses as much as digits as its factorization.

140051535779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619260.

The product of its (nonzero) digits is 661500, while the sum is 47.

The spelling of 140051535779 in words is "one hundred forty billion, fifty-one million, five hundred thirty-five thousand, seven hundred seventy-nine".