140262251261 has 16 divisors (see below), whose sum is σ = 155656461888. Its totient is φ = 125326992000.

The previous prime is 140262251257. The next prime is 140262251317. The reversal of 140262251261 is 162152262041.

It is a cyclic number.

It is not a de Polignac number, because 140262251261 - 2² = 140262251257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140262251761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308555 + ... + 612968.

It is an arithmetic number, because the mean of its divisors is an integer number (9728528868).

Almost surely, 2^140262251261 is an apocalyptic number.

140262251261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140262251261 is a deficient number, since it is larger than the sum of its proper divisors (15394210627).

140262251261 is a wasteful number, since it uses less digits than its factorization.

140262251261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921772.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 140262251261 in words is "one hundred forty billion, two hundred sixty-two million, two hundred fifty-one thousand, two hundred sixty-one".