1400416721261 has 16 divisors (see below), whose sum is σ = 1434603804480. Its totient is φ = 1366304231040.

The previous prime is 1400416721257. The next prime is 1400416721273. The reversal of 1400416721261 is 1621276140041.

It is a cyclic number.

It is not a de Polignac number, because 1400416721261 - 2² = 1400416721257 is a prime.

It is a super-2 number, since 2×1400416721261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400416721251) 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, 188401601 + ... + 188409033.

It is an arithmetic number, because the mean of its divisors is an integer number (89662737780).

Almost surely, 2^{1400416721261} is an apocalyptic number.

It is an amenable number.

1400416721261 is a deficient number, since it is larger than the sum of its proper divisors (34187083219).

1400416721261 is a wasteful number, since it uses less digits than its factorization.

1400416721261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11836.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 1400416721261 in words is "one trillion, four hundred billion, four hundred sixteen million, seven hundred twenty-one thousand, two hundred sixty-one".