43401013402 has 4 divisors (see below), whose sum is σ = 65101520106. Its totient is φ = 21700506700.

The previous prime is 43401013393. The next prime is 43401013441. The reversal of 43401013402 is 20431010434.

43401013402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20431010434 = 2 ⋅10215505217.

It can be written as a sum of positive squares in only one way, i.e., 42414990601 + 986022801 = 205949^2 + 31401^2 .

It is a super-2 number, since 2×43401013402² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10850253349 + ... + 10850253352.

Almost surely, 2^43401013402 is an apocalyptic number.

43401013402 is a deficient number, since it is larger than the sum of its proper divisors (21700506704).

43401013402 is a wasteful number, since it uses less digits than its factorization.

43401013402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21700506703.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 43401013402 its reverse (20431010434), we get a palindrome (63832023836).

The spelling of 43401013402 in words is "forty-three billion, four hundred one million, thirteen thousand, four hundred two".